If you've ever been on-air whilst the F-troop linking scripts run, you'll have heard "linkdis" and "ufdis" being announced. This is what they mean:

Control State Keywords

There are several predefined keywords used to enable and disable the various features of the controller.

Keyword	Description
rptena	Repeater Enable
rptdis	Repeater Disable
totena	Timeout Timer Enable
totdis	Timeout Timer Disable
apena	Autopatch Enable
apdis	Autopatch Disable
lnkena	Link Enable
lnkdis	Link Disable
skena	Scheduler Enable
skdis	Scheduler Disable
ufena	User Functions Enable
ufdis	User Functions Disable
atena	Alternate Hangtime Enable
atdis	Alternate Hangtime Disable
noice	No Incoming Connections Enable
noicd	No Incoming Connections Disable
slpen	Sleep Mode Enable
slpds	Sleep Mode Disable