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.
The syntax is
Exhibit 2.5. table title
increment <variable>;
decrement <variable>;
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Some examples are
Exhibit 2.6. table title
setvar ~my_num, 4;
increment ~my_num; #value of ~my_num is now 5
decrement ~my_num; #value of ~my_num is now 4
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