SCREEN MACHINE
by Robert Robinson
from Popular Computing Weekly, 31st July 1987

Store and display screens in a variety of ways with Screen Machine.
SCREEN$ can be faded, wiped from the left or right, top or bottom,
or in columns. The attributes can be equally scrolled and also made
to sweep in or out.

First, a screen must be loaded, and you are prompted for the address
to load it to. The demo in the program requests a screen and then
proceeds to perform its repertoire of fades. The Print routine is simply
used to transfer a saved screen from memory to the screen.

To use the individual routines, enter:
  RANDOMIZE (picture start address)
and then
  LET mc=USR (specific routine start)
