access to the Perl language.
The preprocessor copies input to the output, while substituting Perl
-code contained special markers.
+code contained special markers: "$<" and ">$".
+It is possible to choose different markers using command line options
+or by defining the variables $peml_open, $peml_close, using perl.
-Hello World $< 11*3 >$, today is
a $< `date` >$
+Hello World $< 11*3 >$, today is $< `date` >$