HP 54501A Programming Reference Manual page 53

<wh
i
te spoce>
Figure 3-7.
<
program
message
unit
separator
>
<simp Ie
commond
program header>
<compound connmand
progrom header>
<corTmon command
program heoder>
Figure 3-8.
<
command program header>
HP 54501
A
Programming
Message Communication and System Functions
3-11