#*
 testing begin-blocks which are similar to awk's begin rules
 in that they are only executed once when the script starts.

 They are useful for setting any configuration parameters for
 the script (such as the stack token delimiter) or printing 
 start-up messages.

 The rest of the script has an implicit loop (with one iteration
 for each character of the input stream.

*#

 begin {
   add "starting script... \n";
   print; clear;
 }
 read; print;