Retrieved copy of the Course given from 22.6 - 26.6  1998 at IAC by Reinhold Kroll
http://www.iac.es/sieinvens/SINFIN/CursoIDL/cidl.php

Interactive Data Language (IDL) - Contents

1. Introduction, Language Elements and Syntax

2. Functions and Subroutines, I/O

3. Direct Graphics

4. Widgets

5. Pointers and Objects

6. Selected Topics, Cleanup