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variable

Although the parser is not intended to function as a scripting language interpreter, it is sometimes useful to have limited macro-like capabilities available.

Syntax

One can use var or variable to define variables (macros).

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variable (1) (2)
# (1) string, name
# (2) any read as string, value

To reference a defined variable, use dollar sign $ with the variable name. For example,

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variable ele_t GCMQG

element $ele_t 1 1 2 8 7 1 1

This is equivalent to the following.

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element GCMQG 1 1 2 8 7 1 1

variable must exist

The variable must exist (have been defined) when referenced. Thus the order matters in this situation. This is because the scan and replacement of variables/macros happen during the processing/parsing of the command.

More advanced scripting functionality shall be fulfilled by other tools.