#### 5.15.1 Component library setup

Component library functions are Scheme procedures that should be specified in one of `gafrc` files. See Legacy configuration for more information.

Environment variables are expanded in all component library functions working with paths. You can use, e.g. ‘`${HOME}/lib/path`’ to specify the directory you need. You may form the path names with any Scheme functions available as well.

The following commands are available: