indicates
r
treated as if enclosed by braces.
If a list of
it is to be
r ,
indicates that you may enter
In instances where there are nested
lines r the following rule applies:
dependent upon the selection of the
nesting.
Level Level 2 Level 3
[filename rfiletype [filemode]]]
braces or brackets on the text
nested operand selection is
operand of a
only one pair of brackets and the lowest level of nesting is the
r in
the previous exampler the user has the option of selecting a file by
filename only or filename filetype only or by filename filetype
filemode. The
nested within filename and our rule states: the
nesting must be selected in order to select the next level (lower
level) operand. The same is true if the user wants to select
filemode; filename and filetype must also be selected.
be repeated more than once in succession.
(options
parentheses.