except that it's more efficient, more concise, keeps track of the
current filename for error messages, and searches all the B<-I>
libraries if the file isn't in the current directory (see also the @INC
-array in L<perlvar/Predefined Names>). It's the same, however, in that it does
+array in L<perlvar/Predefined Names>). It is also different in how
+code evaluated with C<do FILENAME> doesn't see lexicals in the enclosing
+scope like C<eval STRING> does. It's the same, however, in that it does
reparse the file every time you call it, so you probably don't want to
do this inside a loop.