Ton, I have this in a button and it seems to work:
<$action-sendmessage $message="tm-open-window" $param="..." height="600px" width="500px"/> <:-) -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/2b32e0c6-3e48-4de5-8d3f-2228ade02617%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
