Clear

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This resets GAMS items to their default values.  This command is invoked using the syntax

 

$clear item1 item2

Notes:

A list of items follows $clear and results in multiple items being cleared.  While the example above lists two items one, two or many more can be listed.
This is carried out during compile time, and not when the GAMS program executes and it is carried out before any calculations.
There is an associated option command called clear which operates at execution time. It is usually the better choice.
Not all items can be cleared - only set, parameter, equation and variable types can be reset.
The result is that sets are emptied and data are zeroed.