DEFINE STRUCTURE

        [SIC\]DEFINE STRUCTURE Str [/GLOBAL]

    Define a new structure name. Structure  naming  follows  the  Fortran-90
    convention, i.e. Str%SubStr%SubStrElement. Structure elements (including
    sub-structures if needed) can be defined using command
        DEFINE REAL Str%Element
    etc.

    An entire structure and all its associated members is deleted by a  sin-
    gle command DELETE Str /VARIABLE.