Radio Shack TRS-80 Owner's Manual page 28

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TRS-80
MODEL
Hi
DISK
SYSTEM
Notation
and
Abbreviations
For
the
sake of
clarity
and
brevity,
we've
used
some
special notation
and
type
styles
in this
book.
capitals and punctuation
indicate material
which must
be entered exactly
as
it
appears. (The only
punctuation
symbols
not entered
are
ellipses,
explained below.) For
example,
in
the
line:
DUMP
LISTER (START
=
7000,END
=
7100,TRA
=
7004)
every
letter
and
character
should be typed
as indicated.
lowercase
italics
represent
words,
letters,
characters or values you
supply
from
a
set
of acceptable
values
for a particular
command.
For example,
the
line:
LIST filename
indicates
that
you can supply any
valid
file
specification
after
list.
Ellipsis indicates
that
the
preceding
items can be
repeated. For example:
ATTRIB
filename
(option,
.
,
,)
indicates
that
several options
may
be repeated
inside the parentheses.
This
special
symbol
is
used
occasionally
to indicate a blank-space character
(ASCII code 32
decimal,
20
hexadecimal).
PRINT "DHBIB!"
X'nnnn"
Indicates
that
nnnn
is
a
hexadecimal number.
All other
numbers
in
the text
of
this
book
are
in
decimal form,
unless otherwise noted.
X'7000'
indicates the
hexadecimal
value
7000 (decimal
28672).
COMPUTER TYPE
Any
words,
letters,
or
numbers
that are displayed on
the screen
will
be
in
computer
type (dot-matrix). Uppercase
letters are
used; however, your
screen
at
times
may
display lowercase
letters instead.
14