OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual
About This Manual
OSI/MHS Gateway Programmatic Interface (GPI) Reference Manual—522223-001
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Notation for Messages
!i and !o. In procedure calls, the !i notation follows an input parameter (one that passes data 
to the called procedure); the !o notation follows an output parameter (one that returns 
data to the calling program).  For example:
CALL CHECKRESIZESEGMENT ( segment-id !i
 , error ) ; !o
!i,o. In procedure calls, the !i,o notation follows an input/output parameter (one that both 
passes data to the called procedure and returns data to the calling program). For 
example:
error := COMPRESSEDIT ( filenum ) ; !i,o
!i:i. In procedure calls, the !i:i notation follows an input string parameter that has a 
corresponding parameter specifying the length of the string in bytes. For example:
error := FILENAME_COMPARE_ ( filename1:length !i:i
 , filename2:length ) ; !i:i
!o:i. In procedure calls, the !o:i notation follows an output buffer parameter that has a 
corresponding input parameter specifying the maximum length of the output buffer in 
bytes.  For example:
error := FILE_GETINFO_ ( filenum !i
 , [ filename:maxlen ] ) ; !o:i
Notation for Messages
The following list summarizes the notation conventions for the presentation of displayed 
messages in this manual.
Nonitalic text. Nonitalic letters, numbers, and punctuation indicate text that is displayed or 
returned exactly as shown.  For example:
Backup Up.
lowercase italic letters. Lowercase italic letters indicate variable items whose values are 
displayed or returned. For example:
p-register
process-name
[ ] Brackets. Brackets enclose items that are sometimes, but not always, displayed.  For 
example:
Event number = number [ Subject = first-subject-value ]
A group of items enclosed in brackets is a list of all possible items that can be displayed, 
of which one or none might actually be displayed. The items in the list might be 
arranged either vertically, with aligned brackets on each side of the list, or horizontally, 
enclosed in a pair of brackets and separated by vertical lines. For example:
LDEV ldev [ CU %ccu | CU %... ] UP [ (cpu,chan,%ctlr,%unit) ]










