Radio Shack TRS-80 model III Owner's Manual page 57

Examples
If
you
are using 8'/
2
"-wide forms, you
will
probably
want
to set
width
=
80-
FORMS <WIDTH=80)
If
you
are using 14"-long forms,
you
may
want
to set lines
-78.
FORMS (LINES=78)
This change
will allow
the basic
statement,
lprintchr$(12),
to
advance
a
naze
by
the correct number
of
lines.
Notes:
1.
The width you
specify
is
stored
in
ram
location
16427.
The
lines you
specify
is
stored
in
ram
location
16424.
2.
The
Printer must
be ready
when
you
execute
this
command.
FREE
Display
Disk
Allocation
Map
(iwi
tells
trsdos
to
send
the
map
to
the
Printer.
It
omitted;
trsdos sends
the
map
to the Video
Display
only.
This
command
gives you
a
map
of granule
allocation on
a diskette.
(A
granule,
1280
bytes,
is
the unit of space
allocation.)
It
also
shows
the location
of
the
directory and any flawed
sectors.
When
a diskette has been used
extensively
(file
updates,
files killed, extended,
etc.),
files
often
become
segmented
(dispersed or fragmented).
This slows
the'
access time, since the disk read/write
mechanism
must move
back and
forth
across the diskette
to
read and
write
to a
file.
free
helps you
determine
just
how
segmented your
disk
files are. If
you
decide
you'd
like to re-organize a
particular
file
to
allow
faster
access,
you
can
then
copy
it
onto
a relatively
"clean"
diskette.
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