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FreeM supports creating persistent mappings through which arbitrary global names may be mapped to specific namespaces. This allows non-% globals to be stored in the SYSTEM namespace, or % globals to be stored in non-SYSTEM namespaces.
To map the ^FOO global to the SYSTEM namespace, any of the following will work:
MAP GLOBAL ^FOO="SYSTEM"
SET ^$GLOBAL("FOO","NAMESPACE")="SYSTEM"
SET ^$SYSTEM("MAPPINGS","GLOBAL","^FOO")="SYSTEM"
There is no functional difference in any of the three approaches; the method you choose is a matter of personal preference.
To remove the above mapping, any of the following examples will also work:
UNMAP GLOBAL ^FOO
KILL ^$GLOBAL("FOO","NAMESPACE")
KILL ^$SYSTEM("MAPPINGS","GLOBAL","^FOO")
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