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Contains the current routine name.
$ZNAME contains the name of the routine executing on the current process. Commonly, this is the current routine loaded by ZLOAD. If no routine is currently executing, $ZNAME contains a null string.
When ZLOAD loads a routine, it becomes the currently loaded routine for the current process in all namespaces. Therefore, you can use $ZNAME to display the name of the currently loaded routine from any namespace, not just the namespace that it was loaded from.
Routine names are case-sensitive.
Note that a failed attempt to ZLOAD a routine removes the currently loaded routine, setting $ZNAME to the null string.
This special variable cannot be modified using the SET command. Attempting to do so results in a <SYNTAX> error.
The $ZNAME value can be set by the any of the following commands:

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