can process any or all of the trailing garbage via the DATA filehandle
if desired).
-The directory, if specified, must appear immedately following the B<-x>
+The directory, if specified, must appear immediately following the B<-x>
with no intervening whitespace.
=back
X<PERL5OPT>
Command-line options (switches). Switches in this variable are taken
-as if they were on every Perl command line. Only the B<-[CDIMUdmtwA]>
+as if they were on every Perl command line. Only the B<-[CDIMUdmtw]>
switches are allowed. When running taint checks (because the program
was running setuid or setgid, or the B<-T> switch was used), this
variable is ignored. If PERL5OPT begins with B<-T>, tainting will be
A pseudolayer that turns on a flag on the layer below to tell perl
that output should be in utf8 and that input should be regarded as
-already in utf8 form. May be useful in PERLIO environment
-variable to make UTF-8 the default. (To turn off that behaviour
-use C<:bytes> layer.)
+already in valid utf8 form. It does not check for validity and as such
+should be handled with caution for input. Generally C<:encoding(utf8)> is
+the best option when reading UTF-8 encoded data.
=item :win32
X<:win32>