You can also assign variables using
C<# TEST:$myvar=5+6;$second_var=$myvar+3> and later use them in the add
to count expressions. A C<$var++> construct is also available.
+Also available are C<+=>, C<-=> and C<*=>.
You can also do C<# TEST:source "path-to-file-here.txt"> where the filename
comes in quotes, in order to include the filename and process it (similar