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        [GREG1\]DRAW VALUE Xc Yc

    Inquires  the  map  value  at the location (Xc,Yc). A regular grid array
    must be present to use this, (Xc,Yc) must be within the Regular Grid ar-
    ray limits; otherwise the command is ignored. Cursor form V.

Gildas manager 2021-09-24