Radio Shack TRS-80 model III Owner's Manual page 126

DISK BASIC
CLOSE
Close Access
to
the
File
nmexp has a value from
1
to 15,
and
refers to
the
f
He's buffer
number
lle^
This
command
terminates access
to a
file
through the specified buffer(s).
If
nmexp
has not
been assigned
in
a
previous
open
statement, then
close
nmexp
has
no
effect.
Examples
CLOSE
1
#2 t8
Terminates the
file
assignments
to
buffers
1
,
2 and
8.
These
buffers
can
now
be
assigned
to
other
files
with
open
statements.
CLOSE FIRSTX+COUNTX
Terminates
the
file
assignment
to the
buffer specified
by
the
sum
(first%
+
COUNT%).
Do
not
remove a
diskette
which contains a
file
opened
for
writing
(mode
=
O,
E,
or R). First close the
file.
This
is
because
the last
256 bytes of data
may
not
have been
written to
disk
yet.
Closing
the
file
will
write the data,
if
it
hasn't
already
been
written.
Any
modification to
the resident
program (new,
editing,
load, merge,
etc.)
will
cause
open
files
to
be
closed.
125