Difficult choice time… 
“purge” - “Purge old files from PhotoTranscode cache”
“remove” - “Remove old files from PhotoTranscode cache”
My only concern is future development .
I’ve toyed with “Clear”, “Clean”, “Purge”, “Remove”, and “Delete”.
Delete - Can imply way too much
Clear - Not descriptive enough (clear what? the screen? - lol)
Clean - “clean the keyboard?” – lol
Purge & Remove seem best candidates.
I will change the numbering, I’ll move this down into its own “block” of command numbers so it’s not confused with primary functionality.
Thoughts?
Input?
