HP 39g Graphing Calculator - Manual (Page 225)

UNCHECK
View numbers
The views are numbered as follows:
0 HOME 11 List Catalog
1 Plot 12 Matrix Catalog
2 Symbolic 13 Notepad Catalog
3 Numeric 14 Programs Catalog
4 Plot-Setup 15 Plot-Detail
5 Symbolic-Setup 16 Plot-Table
6 Numeric-Setup 17 Overlay Plot
7 Views 18 Auto scale
8 Note 19 Decimal
9 Sketch view 20 Integer
10 Aplet Catalog 21 Trig
Unchecks (unselects) the corresponding function in the
current aplet. For example, Uncheck 3 would uncheck F3 if
the current aplet is Function.
UNCHECK n
Branch commands
IF...THEN...END
Branch commands let a program make a decision based on the
result of one or more tests. Unlike the other programming
commands, the branch commands work in logical groups.
Therefore, the commands are described together rather than
each independently.
Executes a sequence of commands in the true-clause only if
the test-clause evaluates to true. Its syntax is:
IF test-clause
THEN true-clause END
Example
l^A :
IF A==l
THEN MSGBOX A ” EQUALS 1" :
END
Programming 15-17