Index: openacs-4/packages/xowf-monaco-plugin/tcl/form-field-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowf-monaco-plugin/tcl/form-field-procs.tcl,v
diff -u -r1.1.1.1.2.8 -r1.1.1.1.2.9
--- openacs-4/packages/xowf-monaco-plugin/tcl/form-field-procs.tcl	8 Jul 2021 00:10:24 -0000	1.1.1.1.2.8
+++ openacs-4/packages/xowf-monaco-plugin/tcl/form-field-procs.tcl	8 Jul 2021 08:49:57 -0000	1.1.1.1.2.9
@@ -201,7 +201,7 @@
         fullscreenBtn.addEventListener("click", function(e) {
           if ((!fullscreenWindowHandle || fullscreenWindowHandle.closed) && page) {
             fullscreenWindowHandle = window.open();
-            fullscreenWindowHandle.document.write('<iframe src="" style="width: 100%; height: 100%; border: 0;"></iframe>');
+            fullscreenWindowHandle.document.write('<iframe src="" style="width: 100%; height: 100%; border: 0;" allowfullscreen></iframe>');
             fullscreenIframe = fullscreenWindowHandle.document.querySelector('iframe');
             fullscreenIframe.srcdoc = page;
           }