@item -fallow-argument-mismatch
@opindex @code{fallow-argument-mismatch}
-Some code contains calls to external procedures whith mismatches
+Some code contains calls to external procedures with mismatches
between the calls and the procedure definition, or with mismatches
between different calls. Such code is non-conforming, and will usually
-be flagged wi1th an error. This options degrades the error to a
-warning, which can only be disabled by disabling all warnings vial
+be flagged with an error. This options degrades the error to a
+warning, which can only be disabled by disabling all warnings via
@option{-w}. Only a single occurrence per argument is flagged by this
warning. @option{-fallow-argument-mismatch} is implied by
@option{-std=legacy}.