Screen type instructions
These nine types of screens can be selected by adding a screen instruction:
- MENU
 - VALIDATEINPUT
 - DISPLAYONLY
 - SELECTOR
 - SEARCHRESULT
 - LOOKUPSCREEN
 - XMITONLY
 - NOXMIT
 - default
 
The default screen is the normal screen and has no instruction. Only one of these instructions should be added to a given screen.