Index: doc/next-migration.html =================================================================== diff -u -rd8b8fec1b9c4b2ab7c1cc36c156649109ca0807a -rd303212e06bfd89c57038a26ba54f9f86e941601 --- doc/next-migration.html (.../next-migration.html) (revision d8b8fec1b9c4b2ab7c1cc36c156649109ca0807a) +++ doc/next-migration.html (.../next-migration.html) (revision d303212e06bfd89c57038a26ba54f9f86e941601) @@ -858,7 +858,7 @@

  • -One can define in NX hierachical method names (similar to +One can define in NX hierarchical method names (similar to commands and subcommands, called method ensembles) in a convenient way to provide extensible, hierarchical naming of methods. @@ -1003,7 +1003,7 @@

    Much Smaller Interface: The Next Scripting Language has a much smaller interface (i.e. provides less predefined methods) than - XOTcl (see Table 1), although the expressability was increased in + XOTcl (see Table 1), although the expressiveness was increased in NX.

    • @@ -1103,21 +1103,21 @@ 
    Class create Stack {
 
-   #
-   # Stack of Things
-   #
+   #
+   # Stack of Things
+   #
 
    :variable things ""
 
    :public method push {thing} {
-      set :things [linsert ${:things} 0 $thing]
-      return $thing
+      set :things [linsert ${:things} 0 $thing]
+      return $thing
    }
 
    :public method pop {} {
-      set top [lindex ${:things} 0]
-      set :things [lrange ${:things} 1 end]
-      return $top
+      set top [lindex ${:things} 0]
+      set :things [lrange ${:things} 1 end]
+      return $top
    }
 }
    @@ -1131,9 +1131,9 @@ .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;} .nx-variable {color: #AF663F; font-weight: normal; font-style: normal;} -
    #
-# Stack of Things
-#
+
    #
+# Stack of Things
+#
 
 Class Stack
 
@@ -1144,14 +1144,14 @@
 
 Stack instproc push {thing} {
    my instvar things
-   set things [linsert $things 0 $thing]
-   return $thing
+   set things [linsert $things 0 $thing]
+   return $thing
 }
 
 Stack instproc pop {} {
    my instvar things
-   set top [lindex $things 0]
-   set things [lrange $things 1 end]
+   set top [lindex $things 0]
+   set things [lrange $things 1 end]
 }
    @@ -1163,7 +1163,7 @@

    In general, the Next Scripting Framework supports multiple object systems concurrently. Effectively, every object system has different base classes for creating objects and classes. Therefore, these object -systems can have different different interfaces and names of built-in +systems can have different interfaces and names of built-in methods. Currently, the Next Scripting Framework is packaged with three object systems:

    +
    # Methods for defining methods:
+#
+#     proc
+#     instproc
+#     forward
+#     instforward
+#     parametercmd
+#     instparametercmd
+#
+# All these methods return empty.
    -
    # Methods for defining methods:
-#
-#     alias
-#     forward
-#     method
-#
-# All these methods return method-handles.
    +
    # Methods for defining methods:
+#
+#     alias
+#     forward
+#     method
+#
+# All these methods return method-handles.
    @@ -1541,7 +1541,7 @@ parameters are defined (see Section 3.4).

    In NX forwarders are called forward. NX does not provide an public available method to define variable accessors like parametercmd in -XOTcl, but use interanlly the Next Scripting Framework primitive +XOTcl, but use internally the Next Scripting Framework primitive nsf::method::setter when appropriate.

    -
    # Define forwarder
+
    # Define forwarder
 
 Class create C {
   :forward f1 ...
@@ -1609,9 +1609,9 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Define setter and getter methods in XOTcl.
-#
-# XOTcl provides methods for these.
+
    # Define setter and getter methods in XOTcl.
+#
+# XOTcl provides methods for these.
 
 Class C
 C instparametercmd p1
@@ -1630,12 +1630,12 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Define setter and getter methods in NX.
-#
-# NX does not provide own methods, but uses
-# the low level framework commands, since
-# application developer will only seldomly
-# need it.
+
    # Define setter and getter methods in NX.
+#
+# NX does not provide own methods, but uses
+# the low level framework commands, since
+# application developer will only seldomly
+# need it.
 
 Class create C
 ::nsf::method::setter C p1
@@ -1679,7 +1679,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Method "alias" not available
    
+
    # Method "alias" not available
    +
    # Method modifiers
+#
+#   "object",
+#   "public",
+#   "protected", and
+#   "private"
+#
+# are not available
    +
    # XOTcl provides no means for
+# method hiding
    +s1 foo 3 4 ;# returns 7 +s1 bar 3 4 ;# returns 12 +s1 baz 3 4 ;# unable to dispatch method 'baz'
    -
    # Define method aliases
-# (to scripted or non-scripted methods)
+
    # Define method aliases
+# (to scripted or non-scripted methods)
 
 Class create C {
   :alias a1 ...
@@ -1740,14 +1740,14 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Method modifiers
-#
-#   "object",
-#   "public",
-#   "protected", and
-#   "private"
-#
-# are not available
    -
    # Method modifiers
-#
-#   "object",
-#   "public",
-#   "protected"
-#
-# are applicable for all kinds of
-# method defining methods:
-#
-#    method, forward, alias
-#
-# The modifier "private" is available for
-#
-#    method, forward, alias
-#
+
    # Method modifiers
+#
+#   "object",
+#   "public",
+#   "protected"
+#
+# are applicable for all kinds of
+# method defining methods:
+#
+#    method, forward, alias
+#
+# The modifier "private" is available for
+#
+#    method, forward, alias
+#
 Class create C {
   :/method-definiton-method/ ...
   :public /method-definiton-method/ ...
@@ -1824,8 +1824,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # XOTcl provides no means for
-# method hiding
    -
    # Hiding of methods via "private"
-#
+
    # Hiding of methods via "private"
+#
 nx::Class create Base {
-  :private method baz {a b} {expr {$a + $b}}
-  :public method foo {a b} {: -local baz $a $b}
+  :private method baz {a b} {expr {$a + $b}}
+  :public method foo {a b} {: -local baz $a $b}
 }
 
 nx::Class create Sub -superclass Base {
-  :public method bar {a b} {: -local baz $a $b}
-  :private method baz {a b} {expr {$a * $b}}
+  :public method bar {a b} {: -local baz $a $b}
+  :private method baz {a b} {expr {$a * $b}}
 
   :create s1
 }
 
-s1 foo 3 4  ;# returns 7
-s1 bar 3 4  ;# returns 12
-s1 baz 3 4  ;# unable to dispatch method 'baz'
    @@ -1888,8 +1888,8 @@ .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;} .nx-variable {color: #AF663F; font-weight: normal; font-style: normal;} -
    # XOTcl provides only method deletion with
-# the equivalent of Tcl's "proc foo {} {}"
+
    # XOTcl provides only method deletion with
+# the equivalent of Tcl's "proc foo {} {}"
 /cls/ instproc foo {} {}
 /obj/ proc foo {} {}
    @@ -1903,8 +1903,8 @@ .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;} .nx-variable {color: #AF663F; font-weight: normal; font-style: normal;} -
    # Deletion of Methods
-#
+
    # Deletion of Methods
+#
 /cls/ delete method /name/
 /obj/ delete object method /name/
    @@ -1960,8 +1960,8 @@ 
    Class C
 C instproc foo args {...}
 C instproc bar args {
-  my foo 1 2 3 ;# invoke own method
-  o baz        ;# invoke other object's method
+  my foo 1 2 3 ;# invoke own method
+  o baz        ;# invoke other object's method
 }
 Object o
 o proc baz {} {...}
    @@ -1979,8 +1979,8 @@ 
    Class create C {
   :method foo args {...}
   :method bar args {
-     :foo 1 2 3 ;# invoke own method
-     o baz      ;# invoke other object's method
+     :foo 1 2 3 ;# invoke own method
+     o baz      ;# invoke other object's method
   }
 }
 Object create o {
@@ -2054,12 +2054,12 @@
 
 
    Class C
 C instproc foo args {
-  # Method scoped variable a
+  # Method scoped variable a
   set a 1
-  # Instance variable b
+  # Instance variable b
   my instvar b
   set b 2
-  # Global variable/namespaced variable c
+  # Global variable/namespaced variable c
   set ::c 3
 }
    
 
    
@@ -2075,11 +2075,11 @@
 
 
    Class create C {
   :method foo args {...}
-    # Method scoped variable a
+    # Method scoped variable a
     set a 1
-    # Instance variable b
+    # Instance variable b
     set :b 2
-    # Global variable/namespaced variable c
+    # Global variable/namespaced variable c
     set ::c 3
   }
 }
    
@@ -2110,8 +2110,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Set own instance variable to a value via
-# resolver (preferred and fastest way)
+
    # Set own instance variable to a value via
+# resolver (preferred and fastest way)
 
 ... method ... {
    set :/newVar/ ?value?
@@ -2144,8 +2144,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Set own instance variable via
-# variable import
+
    # Set own instance variable via
+# variable import
 
 ... method ... {
    ::nx::var import [self] /varName/
@@ -2178,7 +2178,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Read own instance variable
+
    # Read own instance variable
 
 ... method ... {
    set /varName/ [set :/otherVar/]
@@ -2195,7 +2195,7 @@
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
 
    ... method ... {
-   set /newVar/ ${:/otherVar/}
+   set /newVar/ ${:/otherVar/}
 }
    
 
 
@@ -2224,7 +2224,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Test existence of own instance variable
+
    # Test existence of own instance variable
 
 ... method ... {
    info :/varName/
@@ -2288,9 +2288,9 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Set instance variable of object obj to a
-# value via resolver
-# (preferred way: define property on obj)
+
    # Set instance variable of object obj to a
+# value via resolver
+# (preferred way: define property on obj)
 
 /obj/ eval [list set :/varName/ ?value?]
    
 
@@ -2318,8 +2318,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Read instance variable of object obj
-# via resolver
+
    # Read instance variable of object obj
+# via resolver
 
 set /varName/ [/obj/ eval {set :/otherVar/}]
    
 
@@ -2350,8 +2350,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Read instance variable of object /obj/
-# via import
+
    # Read instance variable of object /obj/
+# via import
 
 ... method ... {
    ::nx::var import /obj/ /varName/
@@ -2382,8 +2382,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Test existence of instance variable of
-# object obj
+
    # Test existence of instance variable of
+# object obj
 
 /obj/ eval {info exists :/varName/}
    
 
    
@@ -2494,10 +2494,10 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Define class "Foo" with instance
-# variables "x" and "y" initialized
-# on instance creation. The initialization
-# has to be performed in the constructor.
+
    # Define class "Foo" with instance
+# variables "x" and "y" initialized
+# on instance creation. The initialization
+# has to be performed in the constructor.
 
 Class Foo
 Foo instproc init args {
@@ -2506,11 +2506,11 @@
    set y 2
 }
 
-# Create instance of the class Foo
+# Create instance of the class Foo
 Foo f1
 
-# Object f1 has instance variables
-# x == 1 and y == 2
    
+# Object f1 has instance variables
+# x == 1 and y == 2
    
 
    
 
    
-
    # Define class "Foo" with instance variables
-# "x" and "y" initialized on instance creation.
-# The method "variable" is similar in syntax
-# to Tcl's "variable" command. During
-# instance creation, the variable
-# definitions are used for the
-# initialization of the variables of the object.
+
    # Define class "Foo" with instance variables
+# "x" and "y" initialized on instance creation.
+# The method "variable" is similar in syntax
+# to Tcl's "variable" command. During
+# instance creation, the variable
+# definitions are used for the
+# initialization of the variables of the object.
 
 Class create Foo {
   :variable x 1
   :variable y 2
 }
 
-# Create instance of the class Foo
+# Create instance of the class Foo
 Foo create f1
 
-# Object f1 has instance variables
-# x == 1 and y == 2
    
+# Object f1 has instance variables
+# x == 1 and y == 2
    
 
 
 
@@ -2552,7 +2552,7 @@
 assign statements in the constructor requires explicit constructor
 calls, which are often error-prone. Certainly, when a user prefers to
 assign initial values to instance variables via explicit assign
-operations in constructors, this is as ell possible in NX.
    
+operations in constructors, this is as well possible in NX.
    
 
    NX uses the same mechanism to define class variables or object
 variables.
    
 
    
@@ -2581,8 +2581,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # No syntactic support for creating
-# class variables
    
+
    # No syntactic support for creating
+# class variables
    
 
    
 
    
 
    -# Define a object variable "V" with value 100 and
-# an instance variable "x". "V" is defined for the
-# class object Foo, "x" is defined in the
-# instances of the class. "object variable" works
-# similar to "object method".
+# Define a object variable "V" with value 100 and
+# an instance variable "x". "V" is defined for the
+# class object Foo, "x" is defined in the
+# instances of the class. "object variable" works
+# similar to "object method".
 
 Class create Foo {
   :object variable V 100
@@ -2612,8 +2612,8 @@
 
    In the next step, we define configurable instance variables which we
 call properties in NX.
    
 
    XOTcl uses the method parameter is a shortcut for creating multiple
-configurable variables with automically created accessors (methods for
-reading and writing of the variables). In NX, the prefered way to
+configurable variables with automatically created accessors (methods for
+reading and writing of the variables). In NX, the preferred way to
 create configurable variables is to use the method property. The
 method property in NX is similar to variable, but makes the
 variables configurable, which means that
    
@@ -2662,25 +2662,25 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Parameters specified as a list
-# (short form); parameter
-# "a" has no default, "b" has default "1"
+
    # Parameters specified as a list
+# (short form); parameter
+# "a" has no default, "b" has default "1"
 
 Class Foo -parameter {a {b 1}}
 
-# Create instance of the class Foo
+# Create instance of the class Foo
 Foo f1 -a 0
 
-# Object f1 has instance variables
-# a == 0 and b == 1
+# Object f1 has instance variables
+# a == 0 and b == 1
 
-# XOTcl registers automatically accessors
-# for the parameters. Use the accessor
-# "b" to output the value of variable "b"
+# XOTcl registers automatically accessors
+# for the parameters. Use the accessor
+# "b" to output the value of variable "b"
 puts [f1 b]
 
-# Use the setter to alter value of
-# instance variable "b"
+# Use the setter to alter value of
+# instance variable "b"
 f1 b 100
    
 
    
 
    
-
    # Define property "a" and "b". The
-# property "a" has no default, "b" has
-# default value "1"
+
    # Define property "a" and "b". The
+# property "a" has no default, "b" has
+# default value "1"
 
 Class create Foo {
   :property a
   :property {b 1}
 }
 
-# Create instance of the class Foo
+# Create instance of the class Foo
 Foo create f1 -a 0
 
-# Object f1 has instance variables
-# a == 0 and b == 1
+# Object f1 has instance variables
+# a == 0 and b == 1
 
-# Use the method "cget" to query the value
-# of a configuration parameter
+# Use the method "cget" to query the value
+# of a configuration parameter
 puts [f1 cget -b]
 
-# Use the method "configure" to alter the
-# value of instance variable "b"
+# Use the method "configure" to alter the
+# value of instance variable "b"
 f1 configure -b 100
    
 
 
@@ -2751,23 +2751,23 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # "parameter" creates always accessor
-# methods, accessor methods are
-# always public, no "cget" is available.
+
    # "parameter" creates always accessor
+# methods, accessor methods are
+# always public, no "cget" is available.
 
 Class create Foo -parameter {a {b1}}
 
-# Use the accessor method to query
-# the value of a configuration parameter
+# Use the accessor method to query
+# the value of a configuration parameter
 puts [f1 b]
 
-# Use the accessor method to set the
-# value of instance variable "a"
+# Use the accessor method to set the
+# value of instance variable "a"
 f1 a 100
 
-# Use the accessor method to unset the
-# value of instance variable "a" n.a. via
-# accessor
    
+# Use the accessor method to unset the
+# value of instance variable "a" n.a. via
+# accessor
    
 
    
 
    
-
    # Define property "a" and "b". The
-# property "a" has no default, "b" has
-# default value "1"
+
    # Define property "a" and "b". The
+# property "a" has no default, "b" has
+# default value "1"
 
 Class create Foo {
   :variable -accessor public a
   :property -accessor public {b 1}
 }
 
-# Use the accessor method to query
-# the value of a configuration parameter
+# Use the accessor method to query
+# the value of a configuration parameter
 puts [f1 b get]
 
-# Use the accessor method to set the
-# value of instance variable "a"
+# Use the accessor method to set the
+# value of instance variable "a"
 f1 a set 100
 
-# Use the accessor method to unset the
-# value of instance variable "a"
+# Use the accessor method to unset the
+# value of instance variable "a"
 f1 a unset
    
 
 
@@ -2831,9 +2831,9 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # XOTcl provides no means to define
-# configurable variables at the object
-# level
    
+
    # XOTcl provides no means to define
+# configurable variables at the object
+# level
    
 
    
 
    
-
    # Define class with a property for the class object
-# named "cp". This is similar to "static variables"
-# in some other object-oriented programming
-# languages.
+
    # Define class with a property for the class object
+# named "cp". This is similar to "static variables"
+# in some other object-oriented programming
+# languages.
 
 Class create Foo {
   ...
   :object property cp 101
 }
 
-# Define object property "op"
+# Define object property "op"
 
 Object create o {
   :object property op 102
@@ -2897,8 +2897,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # No value constraints for
-# parameter available
    
+
    # No value constraints for
+# parameter available
    
 
    
 
    
-
    # Predefined value constraints:
-#    object, class, alnum, alpha, ascii, boolean,
-#    control, digit, double, false, graph, integer,
-#    lower, parameter, print, punct, space, true,
-#    upper, wordchar, xdigit
-#
-# User defined value constraints are possible.
-# All parameter value checkers can be turned on
-# and off at runtime.
-#
-# Define a required boolean property "a"
-# and an integer property "b" with a default.
-# The first definition uses "properties",
-# the second definition uses multiple
-# "property" statements.
+
    # Predefined value constraints:
+#    object, class, alnum, alpha, ascii, boolean,
+#    control, digit, double, false, graph, integer,
+#    lower, parameter, print, punct, space, true,
+#    upper, wordchar, xdigit
+#
+# User defined value constraints are possible.
+# All parameter value checkers can be turned on
+# and off at runtime.
+#
+# Define a required boolean property "a"
+# and an integer property "b" with a default.
+# The first definition uses "properties",
+# the second definition uses multiple
+# "property" statements.
 
 Class create Foo -properties {
    a:boolean
@@ -2953,7 +2953,7 @@
 to be passed to the constructor of the object.
    
 
    NX allows to define optional and required configure parameters (as
 well as method parameters). Therefore, configure parameters can be used
-as the single mechanism to parameterize objects. It is in NX not
+as the single mechanism to parametrize objects. It is in NX not
 necessary (and per default not possible) to pass arguments to the
 constructor.
    
 
    
@@ -2982,7 +2982,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Required parameter not available
    
+
    # Required parameter not available
    
 
    
 
    
-
    # Required parameter:
-# Define a required property "a" and a
-# required boolean property "b"
+
    # Required parameter:
+# Define a required property "a" and a
+# required boolean property "b"
 
 Class create Foo -properties {
    a:required
@@ -3053,8 +3053,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Multiplicity for parameter
-# not available
    
+
    # Multiplicity for parameter
+# not available
    
 
    
 
    
-
    # Parameter with multiplicity
-#   ints is a list of integers, with default
-#   objs is a non-empty list of objects
-#   obj is a single object, maybe empty
+
    # Parameter with multiplicity
+#   ints is a list of integers, with default
+#   objs is a non-empty list of objects
+#   obj is a single object, maybe empty
 
 Class create Foo -properties {
   {ints:integer,0..n ""}
@@ -3148,19 +3148,19 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Define parameters via slots
+
    # Define parameters via slots
 
 Class Foo -slots {
    Attribute a
    Attribute b -default 1
 }
 
-# Create instance of the class Foo
-# and provide a value for instance
-# variable "a"
+# Create instance of the class Foo
+# and provide a value for instance
+# variable "a"
 Foo f1 -a 0
 
-# Object f1 has a == 0 and b == 1
    
+# Object f1 has a == 0 and b == 1
    
 
    
 
    
-
    # Configurable parameters specified via the
-# method "property" (supports method
-# modifiers and scripted configuration;
-# see below)
+
    # Configurable parameters specified via the
+# method "property" (supports method
+# modifiers and scripted configuration;
+# see below)
 
 Class create Foo {
    :property a
    :property {b 1}
 }
 
-# Create instance of the class Foo and
-# provide a value for instance variable "a"
+# Create instance of the class Foo and
+# provide a value for instance variable "a"
 Foo create f1 -a 0
 
-# Object f1 has a == 0 and b == 1
    
+# Object f1 has a == 0 and b == 1
    
 
 
 
 
 
    Since the slots are objects, the slot objects can be configured and
-parameterized like every other object in NX. Slot objects can be
+parametrized like every other object in NX. Slot objects can be
 provided with a scripted initialization as well. We show first the
 definition of properties simliar to the functionality provided as well
 by XOTcl and show afterwards how to use value constraints, optional
@@ -3223,13 +3223,13 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Define parameter with an an
-# attribute-specific type checker
+
    # Define parameter with an an
+# attribute-specific type checker
 
 Class Person -slots {
   Attribute create sex -type "sex" {
     my proc type=sex {name value} {
-      switch -glob $value {
+      switch -glob $value {
         m* {return m}
         f* {return f}
         default {
@@ -3250,16 +3250,16 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Configure parameter with scripted
-# definition (init-block), defining a
-# property specific type checker
+
    # Configure parameter with scripted
+# definition (init-block), defining a
+# property specific type checker
 
 Class create Person {
     :property -accessor public sex:sex,convert {
 
-      # define a converter to standardize representation
+      # define a converter to standardize representation
       :object method type=sex {name value} {
-        switch -glob $value {
+        switch -glob $value {
           m* {return m}
           f* {return f}
           default {error "expected sex but got $value"}
@@ -3305,8 +3305,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # No syntactic support for deleting
-# variable handlers
    
+
    # No syntactic support for deleting
+# variable handlers
    
 
    
 
    
-
    # Like deletion of Methods:
-# Delete on the object, where the
-# variable handler is defined.
+
    # Like deletion of Methods:
+# Delete on the object, where the
+# variable handler is defined.
 
 /cls/ delete property /name/
 /obj/ delete object property /name/
@@ -3368,9 +3368,9 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Define method foo with non-positional
-# parameters (x, y and y) and positional
-# parameter (a and b)
+
    # Define method foo with non-positional
+# parameters (x, y and y) and positional
+# parameter (a and b)
 
 Class C
 C instproc foo {
@@ -3380,11 +3380,11 @@
    a
    b
 } {
-   # ...
+   # ...
 }
 C create c1
 
-# invoke method foo
+# invoke method foo
 c1 foo -x 1 -y a 2 3
    
 
    
 
    
-
    # Define method foo with
-# non-positional parameters
-# (x, y and y) and positional
-# parameter (a and b)
+
    # Define method foo with
+# non-positional parameters
+# (x, y and y) and positional
+# parameter (a and b)
 
 Class create C {
    :public method foo {
@@ -3410,11 +3410,11 @@
       a
       b
    } {
-      # ...
+      # ...
    }
    :create c1
 }
-# invoke method foo
+# invoke method foo
 c1 foo -x 1 -y a 2 3
    
 
 
@@ -3429,12 +3429,12 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Only leading non-positional
-# parameters are available; no
-# optional positional parameters,
-# no value constraints on
-# positional parameters,
-# no multiplicity, ...
    
+
    # Only leading non-positional
+# parameters are available; no
+# optional positional parameters,
+# no value constraints on
+# positional parameters,
+# no multiplicity, ...
    
 
    
 
    
-
    # Define various forms of parameters
-# not available in XOTcl 1
+
    # Define various forms of parameters
+# not available in XOTcl 1
 
 Class create C {
-  # trailing (or interleaved) non-positional
-  # parameters
+  # trailing (or interleaved) non-positional
+  # parameters
   :public method m1 {a b -x:integer -y} {
-    # ...
+    # ...
   }
 
-  # positional parameters with value constraints
+  # positional parameters with value constraints
   :public method m2 {a:integer b:boolean} {
-    #...
+    #...
   }
 
-  # optional positional parameter (trailing)
+  # optional positional parameter (trailing)
   :public method set {varName value:optional} {
-    # ....
+    # ....
   }
 
-  # parameter with multiplicity
+  # parameter with multiplicity
   :public method m3 {-objs:object,1..n c:class,0..1} {
-    # ...
+    # ...
   }
 
-  # In general, the same list of value
-  # constraints as for configure parameter is
-  # available (see above).
-  #
-  # User defined value constraints are
-  # possible. All parameter value checkers
-  # can be turned on and off.
+  # In general, the same list of value
+  # constraints as for configure parameter is
+  # available (see above).
+  #
+  # User defined value constraints are
+  # possible. All parameter value checkers
+  # can be turned on and off.
 }
    
 
 
@@ -3518,8 +3518,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # No return value checking
-# available
    
+
    # No return value checking
+# available
    
 
    
 
    
-
    # Define method foo with non-positional
-# parameters (x, y and y) and positional
-# parameter (a and b)
+
    # Define method foo with non-positional
+# parameters (x, y and y) and positional
+# parameter (a and b)
 
 Class create C {
 
-  # Define method foo which returns an
-  # integer value
+  # Define method foo which returns an
+  # integer value
   :method foo -returns integer {-x:integer} {
-    # ...
+    # ...
    }
 
-  # Define an alias for the Tcl command ::incr
-  # and assure, it always returns an integer
-  # value
+  # Define an alias for the Tcl command ::incr
+  # and assure, it always returns an integer
+  # value
   :alias incr -returns integer ::incr
 
-  # Define a forwarder that has to return an
-  # integer value
+  # Define a forwarder that has to return an
+  # integer value
   :forward ++ -returns integer ::expr 1 +
 
- # Define a method that has to return a
- # non-empty list of objects
+ # Define a method that has to return a
+ # non-empty list of objects
  :public object method instances {} \
     -returns object,1..n {
    return [:info instances]
@@ -3571,7 +3571,7 @@
 namely class- and object-level mixins and class- and object-level
 filters. The primary difference in NX is the naming, since NX abandons
 the prefix "inst" from the names of instance specific method, but uses
-the the modifier objec" for object specific methods.
    
+the modifier object" for object specific methods.
    
 
    Therefore, in NX, if a mixin is registered on a class-level, it is
 applicable for the instances (a per-class mixin), and if and object
 mixin is registered, it is a per-object mixin.  In both cases, the
@@ -3609,7 +3609,7 @@
 
    /cls/ instmixin ...
 /cls/ instmixinguard /mixin/ ?condition?
 
-# Query per-class mixin
+# Query per-class mixin
 /cls/ instmixin
    
 
    
 
    
-
    # Register/clear per-class mixin and guard for
-# a class
+
    # Register/clear per-class mixin and guard for
+# a class
 
 /cls/ mixins add|set|clear ...
 /cls/ mixins guard /mixin/ ?condition?
 /cls/ configure -mixin ...
 
-# Query per-class mixins
+# Query per-class mixins
 /cls/ mixins get
 /cls/ cget -mixins
 
-# Query per-class mixins (without guards)
+# Query per-class mixins (without guards)
 /cls/ mixins classes
    
 
 
@@ -3651,7 +3651,7 @@
 
    /obj/ mixin ...
 /obj/ mixinguard /mixin/ ?condition?
 
-# Query per-object mixins
+# Query per-object mixins
 /obj/ mixin
    
 
    
 
    
-
    # Register/clear per-object mixin and guard for
-# an object
+
    # Register/clear per-object mixin and guard for
+# an object
 
 /obj/ object mixins add|set|clear ...
 /obj/ object mixins guard /mixin/ ?condition?
 /obj/ configure -object-mixins ...
 
-# Query per-object mixin
+# Query per-object mixin
 /obj/ object mixins get
 /obj/ cget -object-mixin
 
-# Query per-object mixins (without guards)
+# Query per-object mixins (without guards)
 /cls/ mixins classes
    
 
 
@@ -3710,12 +3710,12 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Register per-class filter and guard for
-# a class
+
    # Register per-class filter and guard for
+# a class
 /cls/ instfilter ...
 /cls/ instfilterguard /filter/ ?condition?
 
-# Query per-class filter
+# Query per-class filter
 /cls/ instfilter
    
 
    
 
    
-
    # Register/clear per-class filter and guard for
-# a class
+
    # Register/clear per-class filter and guard for
+# a class
 
 /cls/ filters add|set|clear ...
 /cls/ filters guard /filter/ ?condition?
 /cls/ configure -filters ...
 
-# Query per-class filters
+# Query per-class filters
 /cls/ filters get
 /cls/ cget -filters
 
-# Query per-class filters (without guards)
+# Query per-class filters (without guards)
 /cls/ filters methods
    
 
 
@@ -3767,18 +3767,18 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Register(clear per-object filter and guard for
-# an object
+
    # Register(clear per-object filter and guard for
+# an object
 
 /obj/ object filters add|set|clear ...
 /obj/ object filters guard /filter/ ?condition?
 /obj/ configure -object-filters ...
 
-# Query per-object filters
+# Query per-object filters
 /cls/ object filters get
 /obj/ cget -object-filters
 
-# Query per-object filters (without guards)
+# Query per-object filters (without guards)
 /cls/ object filters methods
    
 
 
@@ -3795,7 +3795,7 @@
 
    In NX, one can use e.g. always info method with a subcommand and the
 framework tries to hide the differences as far as possible. So, one
 can for example obtain with info method parameter the parameters of
-scripted and C-implemented methods the same way, one one can get the
+scripted and C-implemented methods the same way, one can get the
 definition of all methods via info method definition and one can get
 an manual-like interface description via info method
 syntax. In addition, NX provides means to query the type of
@@ -3985,7 +3985,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
 
    /obj/ info lookup methods ... ?pattern?
-# Returns list of method names
    
+# Returns list of method names
    
 
 
 
    
@@ -4254,7 +4254,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # List only application specific methods
+
    # List only application specific methods
 /obj/ info lookup methods -source application ... ?pattern?
-# Returns list of method names
    
+# Returns list of method names
    
 
 
 
    
@@ -4282,10 +4282,10 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Options for 'info methods'
-#
-# -incontext
-# -nomixins
    
+
    # Options for 'info methods'
+#
+# -incontext
+# -nomixins
    
 
    
 
    
-
    # Options for 'info lookup methods'
-#
-# -source ...
-# -callprotection ...
-# -incontext
-# -type ...
-# -nomixins
    
+
    # Options for 'info lookup methods'
+#
+# -source ...
+# -callprotection ...
+# -incontext
+# -type ...
+# -nomixins
    
 
 
 
    
@@ -4317,7 +4317,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # List slot objects defined for obj
-# -source might be all|application|baseclasses
-# -type is the class of the slot object
+
    # List slot objects defined for obj
+# -source might be all|application|baseclasses
+# -type is the class of the slot object
 
 /obj/ info lookup slots ?-type ...? ?-source ...? ?pattern?
 
-# Returns list of slot objects
    
+# Returns list of slot objects
    
 
 
 
    
@@ -4349,10 +4349,10 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # List registered filters
+
    # List registered filters
 /obj/ info filters -order ?-guards? ?pattern?
 
-# List registered mixins
+# List registered mixins
 /obj/ info mixins -heritage ?-guards? ?pattern?
    
 
    
 
    
-
    # List registered filters
+
    # List registered filters
 /obj/ info lookup filters ?-guards? ?pattern?
 
-# List registered mixins
+# List registered mixins
 /obj/ info lookup mixins ?-guards? ?pattern?
    
 
 
@@ -4422,7 +4422,7 @@
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
 
    /obj/ info lookup method /methodName/
-# Returns method-handle
    
+# Returns method-handle
    
 
 
 
    
@@ -4449,7 +4449,7 @@
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
 
    /obj/ info lookup filter /methodName/
-# Returns method-handle
    
+# Returns method-handle
    
 
 
 
@@ -4495,7 +4495,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # not needed, part of
-# "info ?object? method parameter"
    
+
    # not needed, part of
+# "info ?object? method parameter"
    
 
 
 
    
@@ -4711,7 +4711,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # Return the parameters applicable to
-# the create method of a certain class.
-# class can be configured. A pattern can
-# be used to filter the results.
+
    # Return the parameters applicable to
+# the create method of a certain class.
+# class can be configured. A pattern can
+# be used to filter the results.
 
 /cls/ info lookup parameters create ?/pattern/?
 
-# Return in the result in documentation syntax
+# Return in the result in documentation syntax
 
 /cls/ info lookup syntax create ?/pattern/?
 
-# "info lookup parameters configure" returns
-# parameters available for configuring the
-# current object  (might contain object
-# specific information)
+# "info lookup parameters configure" returns
+# parameters available for configuring the
+# current object  (might contain object
+# specific information)
 
 /obj/ info lookup parameters configure ?pattern?
 
-# "info lookup configure syntax" returns syntax of
-# a call to configure in the Tcl parameter syntax
+# "info lookup configure syntax" returns syntax of
+# a call to configure in the Tcl parameter syntax
 
 /obj/ info lookup syntax configure
 
-# Obtain information from a parameter
-# (as e.g. returned from "info lookup
-# parameters configure").
+# Obtain information from a parameter
+# (as e.g. returned from "info lookup
+# parameters configure").
 
 nsf::parameter::info name /parameter/
 nsf::parameter::info syntax /parameter/
@@ -4838,8 +4838,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # obtain parameter definitions defined
-# for a class
+
    # obtain parameter definitions defined
+# for a class
 /cls/ info parameter
    
 
    
 
    
-
    # "info variables" returns handles of
-# properties and variables defined by this
-# class or object
+
    # "info variables" returns handles of
+# properties and variables defined by this
+# class or object
 
 /cls/ info variables ?pattern?
 /obj/ info object variables ?pattern?
 
-# "info lookup variables" returns handles
-# of variables and properties applicable
-# for the current object (might contain
-# object specific information)
+# "info lookup variables" returns handles
+# of variables and properties applicable
+# for the current object (might contain
+# object specific information)
 
 /obj/ info lookup variables /pattern/
 
-# "info variable" lists details about a
-# single property or variable.
+# "info variable" lists details about a
+# single property or variable.
 
 /obj/ info variable definition /handle/
 /obj/ info variable name /handle/
@@ -4905,7 +4905,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # Return list of slots objects defined on the
-# object or class
-#
-# -source might be all|application|baseclasses
-# -type is the class of the slot object
-# -closure includes slots of superclasses
+
    # Return list of slots objects defined on the
+# object or class
+#
+# -source might be all|application|baseclasses
+# -type is the class of the slot object
+# -closure includes slots of superclasses
 
 /cls/ info slots \
    ?-type value? ?-closure? ?-source value? ?pattern?
 /obj/ info object slots ?-type ...? ?pattern?
 
-# List reachable slot objects defined for obj
-# -source might be all|application|baseclasses
-# -type is the class of the slot object
-# Returns list of slot objects.
+# List reachable slot objects defined for obj
+# -source might be all|application|baseclasses
+# -type is the class of the slot object
+# Returns list of slot objects.
 
 /obj/ info lookup slots \
    ?-type ...? ?-source ... ?pattern?
 
-# Obtain definition, name or parameter from
-# slot object
+# Obtain definition, name or parameter from
+# slot object
 
 /slotobj/ definition
 /slotobj/ name
@@ -5115,7 +5115,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    #
-# List the method handle of the specified method,
-# can be used e.g. for aliases. "handle" is the short
-# form of "definitionhandle".
-#
+
    #
+# List the method handle of the specified method,
+# can be used e.g. for aliases. "handle" is the short
+# form of "definitionhandle".
+#
 /cls/ info method handle /methodName/
 /obj/ info object method handle /methodName/
-#
-# For ensemble methods (method name contains
-# spaces) one can query as well the registration
-# handle, which is the handle to the root of the
-# ensemble; the definiton handle points to the
-# leaf of the ensemble.
-#
+#
+# For ensemble methods (method name contains
+# spaces) one can query as well the registration
+# handle, which is the handle to the root of the
+# ensemble; the definiton handle points to the
+# leaf of the ensemble.
+#
 /cls/ info method registrationhandle /methodName/
 /obj/ info object method registrationhandle /methodName/
-#
-# For aliases, one can query the original
-# definition via "info method origin"
-#
+#
+# For aliases, one can query the original
+# definition via "info method origin"
+#
 /cls/ info method origin /methodName/
 /obj/ info object method origin /methodName/
    
 
@@ -5235,7 +5235,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # List objects, where /cls/ is a
-# per-object mixin
+
    # List objects, where /cls/ is a
+# per-object mixin
 
 /cls/ info mixinof -scope object ?-closure? \
    ?pattern?
    
@@ -5326,7 +5326,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # List classes, where /cls/ is a per-class mixin
+
    # List classes, where /cls/ is a per-class mixin
 
 /cls/ info mixinof -scope class ?-closure? \
    ?pattern?
    
@@ -5343,7 +5343,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # List objects and classes, where /cls/ is
-# either a per-object or a per-class mixin
+
    # List objects and classes, where /cls/ is
+# either a per-object or a per-class mixin
 
 /cls/ info mixinof -scope all ?-closure? \
    ?pattern?
    
@@ -5419,7 +5419,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Check if object is a subtype of some class
+
    # Check if object is a subtype of some class
 /obj/ info has type /sometype/
    
 
 
@@ -5446,7 +5446,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Check if object has the specified mixin registered
+
    # Check if object has the specified mixin registered
 /obj/ info has mixin /cls/
    
 
 
@@ -5473,11 +5473,11 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Check if object is an NX class
+
    # Check if object is an NX class
 /obj/ has type ::nx::Class
 
-# Check if object is a class in one of the
-# NSF object systems
+# Check if object is a class in one of the
+# NSF object systems
 ::nsf::is class /obj/
    
 
 
@@ -5504,11 +5504,11 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Check if class is an NX metaclass
+
    # Check if class is an NX metaclass
 expr {[/cls/ info heritage ::nx::Class] ne ""}
 
-# Check if object is a metaclass in one of the
-# NSF object systems
+# Check if object is a metaclass in one of the
+# NSF object systems
 ::nsf::is metaclass /obj/
    
 
 
@@ -5523,7 +5523,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # Check if object is a baseclass of an object system
+
    # Check if object is a baseclass of an object system
 ::nsf::is baseclass /obj/
    
 
 
@@ -5550,7 +5550,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # Return name of object (without namespace prefix)
+
    # Return name of object (without namespace prefix)
 /obj/ info name
    
 
 
@@ -5589,7 +5589,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Check for existence of object (nsf primitive)
+
    # Check for existence of object (nsf primitive)
 ::nsf::object::exists /obj/
    
 
 
@@ -5912,8 +5912,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Returns method-handle of the
-# method to be called via "next"
+
    # Returns method-handle of the
+# method to be called via "next"
 current next
    
 
 
@@ -5940,8 +5940,8 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # Returns method-handle of the
-# filter method
+
    # Returns method-handle of the
+# filter method
 current filterreg
    
 
 
@@ -6055,7 +6055,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # n.a.
    
+
    # n.a.
    
 
    
 
    
-
    # XOTcl example
+
    # XOTcl example
 
 Class Foo -parameter {x y}
 Foo f1 -x -y 1
    
@@ -6374,7 +6374,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # XOTcl example
+
    # XOTcl example
 
 Class Foo -parameter {{x 1}}
 Class Bar -superclass Foo -parameter x
@@ -6398,12 +6398,12 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # NX example
+
    # NX example
 
 nx::Class create Foo
 Foo create f1
 
-# now alter the class of object f1
+# now alter the class of object f1
 nsf::relation::set f1 class ::nx::Object
    
 
 
    
@@ -6432,7 +6432,7 @@
 
    
 
    3.4. Obsolete Commands
    
 
    Parameter-classes were rarely used and have been replaced by the more
-general object parameterization. Therefore, cl info parameterclass has
+general object parametrization. Therefore, cl info parameterclass has
 been removed.
    
 
    
 
    
@@ -6456,7 +6456,7 @@
 .nx-placeholder {color: #AF663F; font-weight: normal; font-style: italic;}
 .nx-variable    {color: #AF663F; font-weight: normal; font-style: normal;}
 
-
    # NX example
+
    # NX example
 ::nsf::exithandler set|get|unset ?arg?
    
 
 
@@ -6466,7 +6466,7 @@