- Editable RT-control: doesn't exist. One can hack Prima::TextView so it would accept keystrokes - all of the underlying rendering mechanics already there, so it's not the real problem. The real problem is to design a viable API - file format, markup model, interface methods, shortcut keys, etc etc.

- Global options - AFAIU Tk fiddles with XRDB, which is hard to incorporate into a portable toolkit. However, there is a limited set of options readable from XRDB, like,

Prima*Widget*color: #003000

- Tk::DoOneEvent == $::application-> yield

- Any Prima::Widget descendant can be used for grouping, if the functionality you need is to group the children widgets inside.

And yes - Prima does compile on 5.8.0 .

Title edit by tye