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A single period can be used as a dummy variable in the template. This is useful when the corresponding word in the string does not need to be stored in a named variable.
Example
The following DO SET statements (which include a %%$PARSE function)
DO SET=%%S = THIS IS A SAMPLE STRING
DO SET=%%T = . . . A4.
DO SET=%%$PARSE %%S %%T
have the same result as the following DO SET statement:
DO SET=%%A4 = SAMPLE
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