IDL, short for Interactive Data Language, is a programming language used for data analysis. It is popular in particular areas of science, such as astronomy, atmospheric physics and medical imaging
You can find documentation on the system, with the command
module help idl
The manual is on the web at the original home page (http://www.harrisgeospatial.com/ProductsandSolutions/GeospatialProducts/IDL.aspx)
CINECA consultants can be reached through the address: superc@cineca.it