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### 5.1 Variables

Variables can be set up and used in templates. Many variables you may use are set up via template arguments, but some may be preferences a user can set up that are used in system templates.

When expanding a template, variables are stored in a dictionary. Dictionary entries are variables. Variables defined in templates can have string like values.

A variable can be set like this:

    set VARNAME "some value"

Note that a VARIABLE is a name in a dictionary that can be used in a MACRO in a template. The macro references some variable by name.