ile -- Icon list evaluator

http://www.costarricense.cr/pagina/ernobe/ile.txt
This is the source code for an Icon list evaluator. It evaluates Icon
expressions that are entered in an Icon list, and you can use curly
brackets and parenthesis in the usual fashion, or declare your own
procedures. The user declared procedures can be used in subsequent
expressions and procedures, and can be saved to a file. Enter 'ile ?'
or 'ile help' for help.