All input mapping must take place upon system boot automatically. 

# L1 trigger
Take a full-screen screenshot. 
Visual signal: shutter (white border along the screen) 
No confirmation. 
No sound. 

# R1 trigger
Toggle Speech-To-Text Dictation
ON: Start listening. 
OFF: Stop listening. Enter text in focused text field. 
Current implementation uses OpenWhispr with controller mapped to {CTRL+SHIFT+TAB}. 

# CTRL + (controller arrowpad) (NOT keyboard arrowpad)
Rotate screen such that pressed arrow is pointing down. 
For example: 
- downarrow -> reset to landscape. 
- leftarrow -> 90 deg clockwise.