The use of brackets denotes choices, one of which be selected. The representation
r ,
i A I B I C
L J
indicates that you may enter A, B, or C, or you may omit the field.
In instances where there are nested
lines, the followinq rule applies;
dependent apon the selection of the braces or brackets on the text
nested operand selection is
operand of a higher level of
Nestinq levels are represented as follows
[Level 1 rLevel 2 [Level 3 ]]]
[filename rfiletype [filemode]]] Where the hiqhest level of nesting is the operand that is enclosed in only one pair of brackets and the lowest level of nestinq is the operanj that is enclosed by the maximum number of brackets. Thus in
the previons example, the user has the option of selecting a file by
filename only, or filename filetype only or by filename filetype The user cannot select filetype alone because filetype is
nested within filename; and, as noted, our rule states: the higher
level nestinq must be selected in order to select the next level level) operand. The same is true if the user wants to select filemoje; filename and filetype must also be selected. An ellipsis indicates that the preceding item or group of items may
be repeated more than once in succession. The representation (spoolij1 spoolid2 ••• }
inaicates that more than one spoolid may be coded within the braces.
section 4. Notational Conventions 39
40 IBM VM/370 CP Command Reference for General Users
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