Uniden BC92XLT Owner's Manual page 31

HOLD - appears during scan hold mode and search
hold mode.
L/O - appears when you manually select a channel
you locked out or a skip frequency.
DLY - appears when you select a delay.
PRI - appears when the priority feature is turned on.
HAM, WX, POL, FIRE, AIR, or MRN - appears along
with an indicator that shows the current service bank
during a service search.
ALT - appears when you receive a Close Call alert
while the Close Call function is on.
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