%EDIT is modeled after the OpenVMS DCL lexical function F$EDIT.
    It is used to perform one or more edits on a specified string.
    %EDIT processes the string of arguments from left to right. %EDIT
    gives precedence to the last argument. %EDIT gives precedence to
    uppercase over lowercase.

    The list of edits may contain any combination of the following
    elements:

    Element    Function

    COLLAPSE   Removes all tabs and spaces.
    COMPRESS   Replaces multiple, consecutive tabs or spaces with a
               single space.
    LOWERCASE  Changes uppercase characters to lowercase.
    TRIM       Removes leading and trailing spaces and tabs.
    UPCASE     Changes lowercase characters to uppercase.