with nonempty prefix1 and prefix2. If C<prefix1> is indeed a prefix of
a builtin library search path, prefix2 is substituted. The error may
appear if components are not found, or are too long. See
-"PERLLIB_PREFIX" in F<README.os2>.
+"PERLLIB_PREFIX" in L<perlos2>.
=item %s matches null string many times
=item PERL_SH_DIR too long
(F) An error peculiar to OS/2. PERL_SH_DIR is the directory to find the
-C<sh>-shell in. See "PERL_SH_DIR" in F<README.os2>.
+C<sh>-shell in. See "PERL_SH_DIR" in L<perlos2>.
=item perl: warning: Setting locale failed.
applications die in silence. It is considered a feature of the OS/2
port. One can easily disable this by appropriate sighandlers, see
L<perlipc/"Signals">. See also "Process terminated by SIGTERM/SIGINT"
-in F<README.os2>.
+in L<perlos2>.
=item Prototype mismatch: %s vs %s