Set the path used to find source and object files. path-list is a colon-separated list of directories, jar files, or zip files.. If any directory has a colon character in it, escape it with a backslash. The special directory name, $expts, refers to the set of current experiments in the order in which they were loaded. You can abbreviate it with a single $ character.
The default path is: $expts:.. which is the directories of the loaded experiments and the current working directory.
Use setpath with no argument to display the current path.
setpath commands must not be used in .er.rc files.