<$tiddler tiddler="othertiddlername">
<h3>Office Notes</h3>
<$transclude tiddler="$:/core/ui/EditTemplate/body/editor"/>
</$tiddler>
I use this method extencivly so yes it's tested. However I gave the answer to a specific question and there are conditions in which it has issues.
Perhaps its premature for tw scripts.
I intend to publish a robust solution but eveytime I go to publish for a general audience there are subtle issues that make it fragile or complex, I run down a rabit hole providing an additional layer of field definitions to address editing of every field type.
I have a number of robust solutions that do this well but they are within a greater solution and hard at this point to extract and generalise for a general audience.
I will publish in time.
Regards
Tony