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-W@
: Set module warning flag.FWEAVE can check module names for the possible anomalous conditions of "never used" or "multiple uses." These correspond to a module warning level, as in the following numbered list:
The module warning flag is the bitwise OR of the desired warning
levels; warning messages are printed only when the relevant bits are
turned on. By default, it is 1, so only messages about never-used
modules are printed. The -W@flag
overrides the default.
For example, to get messages only about multiple uses, say -W@2
;
to get no messages, say -W@0
. One can put such an option into the
.fweb
initialization file (see Initialization).
FWEAVE will always complain about module names that are never defined.