Model 4 screen generator by Colin Dunn.

Run from BASIC. The /CMD file is machine language routines used by the BASIC
program.

S c r e e n   G e n e r a t o r   I V   H e l p   S c r e e n

7 8 9                  Use the number
 \|/                   pad keys to move
4-5-6                  cursor on the
 /|\                   screen.  It will
1 2 3                  draw in black or white.

<S>ave core image file                   <R>elocate cursor
<L>oad core image file                   <F>lip screen (reverse pixels)
<W>hite drawing trail                    <B>lack drawing trail
<T>ext entry mode                        <D>raw line between two points
<C>ircle (center at cursor)              <A>ssembly source save
<CLEAR>-<W> - clear screen to white      <CLEAR>-<B> - clear screen to black
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