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2.3. Incrementing and decrementing numeric variables

The increment command and decrement commands can be used to increment or decrement a numeric variable by 1.

Exhibit 2.5. Syntax of commands for incrementing and decrementing numeric variables

increment <variable>;

decrement <variable>;

Exhibit 2.6. Example for using the commands for incrementing and decrementing variables

setvar ~my_num, 4;

increment ~my_num; #value of ~my_num is now 5

decrement ~my_num; #value of ~my_num is now 4