Right now I can't select stimulus groups with the keyboard in the Variables window. I expect to be able to use the down arrow to select a group/heading and then press the right arrow to expand and left arrow to close.
OK, I will try to make that possible.
It would be nice to add descriptions or doc strings to variables and have those display in the variables window too.
That's a good idea. Maybe it could work using tooltips, i.e. you hover the cursor over the variable name, and the description appears in a box.
Also I just noticed that the 'persistent' spelling of the variable attribute doesn't seem to induce persistence. Is that expected?