AHK is better for stuff like this, something like #Persistent SetTimer, CapsLock, 60000 return CapsLock: Send {CapsLock} AHK is very small, 0

AHK is better for stuff like this, something like #Persistent SetTimer, CapsLock, 60000 return CapsLock: Send {CapsLock} AHK is very small, 0 on resources and this script is visible in tray. You could even enable/disable it via another hotkey or when specific app (PDF reader) is started.