Hi, Jack-
What OS are you on (Mac, Linux, Windows subsystem linux...), and what is your AFNI version ("afni -ver")?
On my linux, the following functionalities exist:
ctrl+r -- save single image
shift+r -- recording ON/OFF toggle
ctrl+shift+r -- disk recording ON/OFF toggle
alt+r -- oversampling value set (toggle through a list)
On Macs, I think instead of "alt+r", the "command+r" ("apple+r") controls the oversampling.
I think that on some Macs I have had the misfortune to use, the "ctrl+r" and "command+r" functionalities were reversed; that is, hitting "command+r" (or "apple-r") should toggle through an oversampling list, and "ctrl+r". So, if you are using a Mac, you can see if that works?
Also, if you have "Num Lock" on, sometimes that can also do weird things with keypresses in both the afni and suma GUIs.
Finally, for completeness, here is a list of keypresses on Macs to enable/free-up (but I don't think these apply in your situation here):
[
afni.nimh.nih.gov]
-pt
