This is a called subroutine taking nine parameters designed to display the scroll bars on a screen. There are basically two sets of coordinate attributes (X + Y) and a colour attribute. The parameters are as follows
VertX The X position for the start of the vertical scroll line
VertY The Y position for the start of the vertical scroll line
Depth The depth of the vertical scroll line
VertDone The position within the vertical line to position the scroll
button expressed as a decimal fraction of one. E.G. If the
button should be placed half way along the line use .5.
HorizX The X position for the start of the horizontal scroll line
HorizY The Y position for the start of the horizontal scroll line
Width The width of the horizontal scroll line
HorizDone The position within the horizontal line to position the
scroll button expressed as a decimal fraction of one. E.G.
If the button should be placed one tenth along the line
use .1.
Attribute The escape sequence for the colours of the bars.
(Volume 4, Issue 6, Page 7)