HP 54501A Programming Reference Manual page 54

Where
<
simple command program header
>
is defined
as
<pcogrom
mnemon
i
c>
Where < compound command program header
>
is defined
as
<program
mnemon
i
c>
<program
mnemon
i
c>
Where
<
common command program header
>
is defined
as
<progr om
mnemon
i
c>
Where
<
program mnemonic
>
is defined
as
S4120/BL45
Where
< upper/lower
case
alpha
>
is defined
as a
single
ASCII
encoded
byte in the range
41
-
5A,
61
-
7A
(65
-
90,97 -122
decimal).
Where <
digit
>
is
defined
as a
single ASCII
encoded
byte in
the range 30
-
39
(48
-
57
decimal).
Where
(_)
represents an "underscore", a
single
ASCII-encoded
byte with the value
5F (95
decimal).
Figure
3-8.
<
command program
header > (continued)
Message Communication and System Functions
3-12
HP 54501A
Programming