4. Configuration files
Interchange configuration is controlled by a number of directives, which are specified in two files. Global configuration directives go in interchange.cfg in the Interchange software directory. Catalog-specific configuration directives go in catalog.cfg in the catalog directory.
A complete directive consists of the directive name followed by whitespace-separated parameters. Any number of spaces or tabs can be between the directive and its options, but the directive and its options must be on the same line. The directive is case-insensitive, but it is recommended that you use it consistently for readability.
You can insert blank lines or comment lines (lines where the first non-blank character is '#') throughout the configuration files to improve readability. The order the lines appear in is significant, but unimportant for the simple catalog you are creating.
For the next part, access your text editor (for example, vi, emacs, pico, joe, gedit, or nedit) to start editing some files.