wc is as specified in the Single UNIX Specification but with differences as listed below.
has unspecified behavior.
The behaviors specified in this section are expected to disappear from a future version of the LSB; applications should only use the non-LSB-deprecated behaviors.
is equivalent to -c.
is equivalent to -l.
prints the length of the longest line.
is equivalent to -w.
outputs version information and exits.
GNU textutils 2.0 does not have -m, but more recent versions of textutils have it (added on 2000-08-06). The LSB will require this option in the future.