Make the SQL editing area a real editor not just a text area: show line numbers,
bookmarks, right hand error stripe with the current line mark add error
annotations (when we support them), add a typical popup menu with "Select in",
Cut/Copy/Paste, and Undo (plus keyboard shortcuts) add a status bar with
position and INS/OVR, etc. Simply make it an editor. I have not looked into
details but SQL editor combines an editor with result set, css editor combines
an editor pane with structured editor, so it should not be too hard to use the
same approach in visual editor.