TRUE in case of an error, FALSE in case of succes.
FUNCTION
The function fills the array **koh_draw_order (see KOHONEN-DRAW-variables).
The net 's NumOutputDims field should have the value 2, since the drawing
routines can only display two-dimensional Kohonen maps.
The array **koh_draw_order is filled by walking down the linked list of
units in net (FirstUnit) and placing the pointers to the units in the array.
The index into the array is calculated using the InOutIndex field of each
unit. This field contains a long value (4 bytes) in which each byte indicates
the offset in one dimension.
NOTE
The function koh_draw_free should be called when the drawing is finished
to free the **koh_draw_order array.
