Index: lams_central/web/css/_authoring_base.scss
===================================================================
diff -u -r1beecee8bde8ac7963119ea5fb289399966c1ae8 -r14157d72996b885cd52d131d142de7bcd5fc2b36
--- lams_central/web/css/_authoring_base.scss	(.../_authoring_base.scss)	(revision 1beecee8bde8ac7963119ea5fb289399966c1ae8)
+++ lams_central/web/css/_authoring_base.scss	(.../_authoring_base.scss)	(revision 14157d72996b885cd52d131d142de7bcd5fc2b36)
@@ -542,6 +542,13 @@
 	overflow: auto;
 	vertical-align: top;
     background: $canvas-dot-background;
+	-webkit-touch-callout: none;
+	-webkit-user-select: none;
+	-khtml-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	-o-user-select: none;
+	user-select: none;	
 }
 
 /**** Template styles */