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NAME
    MoveLayer -- Move layer to new position in BitMap.

SYNOPSIS
    result = MoveLayer( dummy, l, dx, dy )
    d0                  a0     a1 d0  d1

    LONG MoveLayer( LONG, struct Layer *, LONG, LONG);

FUNCTION
    Move this layer to new position in shared BitMap.
    If any refresh layers become revealed, collect damage and
    set REFRESH bit in layer Flags.

INPUTS
    dummy - unused
    l - pointer to a nonbackdrop layer
    dx - delta to add to current x position
    dy - delta to add to current y position

RETURNS
    result - TRUE if operation successful
             FALSE if failed (out of memory)

BUGS
    May not handle (dx,dy) which attempts to move the layer ouside the
    layer's RastPort->BitMap bounds .

SEE ALSO
    graphics/layers.h, graphics/clip.h


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