Custom Words?
0=No, 1=Yes       0
"Custom Words" is referring to the Honeywell panels ability to create words not already available in its vocabulary. You're unlikely to need this.

Press 0
The display will change to:
* Zn 09
This is the start screen for programming alpha descriptors for individual zones. Our programming example is zone 9 (as shown) but you can enter * plus any two digit zone number to program alpha descriptors for that zone.

Enter *09
The prompt will move over to the first word selection.