X Resource Files Used by IDL

There are two resource files used to customize the IDL:

An installation-wide resource file called Idl is located in

<IDL_DIR>/resource/X11/lib/app-defaults

Modifying the global Idl resource file effects an installation-wide customization. Changes to the Idl file are not migrated when a new version of IDL is installed.

The .Xdefaults file located in each user's home directory. Modifying this file changes IDL's behavior for the individual user only.

Note
The $HOME/.idlde file read by previous versions is no longer used by IDL 7.0 and later.