Radio Shack TRS-80 Model III - Page 138

I
1
TRS-80
MODEL
III
DELETE
line
number-line number
Erases program
lines from
memory.
You may specify
an individual
line or
a
sequence of
lines, as follows:
DELETE
line
number
Erases
one line
as specified
DELETE
line
number-line
number Erases
all program
lines
starting
with
first line
number
specified
and ending with
last number
specified
OELETE-line
number
Erases
all program
lines
up to
and
including the
specified
number
The
upper line
number to be
deleted must
be a currently
used number.
Examples:
DELETE
5
Erases line
5 from memory
(error
if line
5
not used)
DELETE
11-18
Erases lines
1
1
,
18
and every line
in between
If
you have just
entered or edited
a line,
you may delete
that line simply
by entering
DELETE,
(use a period instead of
the line
number).
EDIT
line number
Puts the
Computer in
the Edit
Mode so
you
can
modify
your resident
program
. The
longer
and more
complex your
programs are,
the more
important
EDIT will
be. The
Edit
Mode has its own
selection
of subcommands
, and we
have
devoted
Chapter
9
to
the
subject.
LIST line
number-line
number
Instructs
the
Computer
to
display
all
programs lines
presently
stored
in memory.
If
you enter
LIST without
an
argument,
the entire
program will
scroll
continuously
up
the screen.
To stop
the
automatic scrolling,
press
(
SHIFT)
and
@
simultaneously.
This will
freeze
the display
.
Press
any key
to release the
'
'pause"
and
continue the
automatic scrolling.
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