Radio Shack Pro 84 - Manual (Page 21)

21 The Basics
9 Enters a 9.
./CLR/ :
./CLR Enters a decimal point or clears an
incorrect entry.
FUNC + Jumps directly to the last channel
in memory (Ch#200) from any mode.
0/L/O:
0 Enters a 0.
FUNC + L/O Lets you lock out a selected channel
or skip a specified frequency.
E/PGM:
E Enters frequencies into channels.
FUNC+ PGM Programs frequencies into
channels.