Commodore MPS 1200 - Page 114

VTAB
VTAB
VTAB
Relative Vtab
BASIC chr$(27) "f" chr$(1) chr$(n)
1B4601 nh Hex
(n = 0 to 127)
(nh = OOh to 7Fh)
If you only need to move down the page one time, ESC f chr$(1)
advances the paper
any number of lines. This is why it's called
relative; it moves a number of lines in rclation to current paper
position (fixed and variable vtabs are absolute; line 10, for example,
is always in the same place
on the page, no matter where the paper
happens to be).
It is the equivalent of printing a number of line
feeds.
To use the relative vtab command send the MPS 1200 ESC f
chr$(l) followed by the
ASCII code for the number of lines you
want to move, from 0 to 127.
This
command is also an easy way to leave a fixed space (for a
picture
to be inserted later perhaps) without having to figure out
where you are on the page.
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