DEFINE STRUCTURE

        DEFINE STRUCTURE Str [/GLOBAL]

    defines 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
    single command DELETE Str /VARIABLE.