DROP.HELPREXX

DROP instruction

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| DROP item [item] ...                                                        |
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The DROP instruction resets the specified variables to their unassigned states.
Each item must either be a name, or a parenthesized list of names.  Each name
must be a valid REXX symbol, and specifies to reset the variable of the
specified name.  Each name in a parenthesized list is evaluated, and its value
specifies to reset the matching-named variable.  Names are processed in
left-to-right order.  If the name is the stem of a compound variable (e.g.,
X.), all variables starting with the stem are dropped.  If the name is a
compound variable (e.g., X.Y), the compound name is used as normal in REXX
expressions.  If the name specifies a variable passed in through a PROCEDURE
EXPOSE instruction, the variable is dropped in the caller's context as well as
in the callee's.

Examples:

    J=4; drop a x. 3 x. j           /* resets "A", "X.3", and "X.4" */
    MyList='a b c'; drop (mylist) d /* resets "A", "B", "C", and "D" */
    drop x.                         /* resets all "X." */