WordNet environment variables

[Sam Kuper]

Dear all,

Having installed WordNet using "sudo port install wordnet", I'm trying
to learn to use it. The man page accessed by entering "man wn" at the
Terminal refers to the WNHOME and WNSEARCHDIR environment variables.
However, neither "echo $WNHOME" nor "echo $WNSEARCHDIR" yields any
result.

Please could you tell me whether that's intentional; and if it isn't,
how best to fix it (and whether I ought to file a bug report)?

Many thanks,

Sam