Hi Andrej,
I don't have my code with me right now, but for the exact same problem what I did was show the actual text (e.g., "SPACE") with vt.showProportional (where vt is my VideoTrack), and use the present() and buttonchooser with an empty text string. This way I get the RT, but I can separately decide when to remove the text with clk.delay().
I hope that makes sense, if not...
2009-10-22 08:36:36 UTC in PyEPL