Program Entry (Prgm) - HP -32S Owner's Manual

The label is used as identification for executing a specific program or
routine. The label is a single letter from Athrough Z. The letter keys
are used as they are for variables (as discussed in chapter 3). You
cannot assign the same label more than once (this causes the message
DUPLICRT. LBL), but a label can use the same letter that a variable
uses.
It is possible to have one program (the top one) in memory without
any label. However, adjacent programs need a label between them to
keep them distinct.
Program Line Numbers. Line numbers are preceded by the letter
for the label, such as fl01. If one label's routine has more than 99
lines, then the line number appears with a decimal point instead of
the leftmost number, such as fl.01 for line 101 in A. For more than
199 lines, the line number uses a comma, such as fl,01 for line 201.
Program Returns. Programs and subroutines should end with a re
turn instruction. The keystrokes are:
Hi LBL/RTN | {RTN}
When a program finishes running, the last RTN instruction returns
the program pointer to PRGM TOP, the top of program memory.
Program Entry (PRGM)
Pressing Tprgm Itoggles the calculator into and out ofprogram entry
(PRGM annunciator on). Keystrokes during program entry are stored
as program lines in memory. Each instruction or number occupies one
program line, and there is no limit (other than available memory) on
the number of lines in a program.
To enter a program into memory:
1. Press Hi prgm I for program entry.
72 5: Simple Programming