This command is used to map a character string to a 5 digit or less integer. The hash code result can be used as a starting value for a database key. Typically, a query will be made to make sure that the value is unique.
The command is part of the Humelib package and can be imported from the namespace humelib.
package require Humelib namespace import -force humelib::* set code [ep_hash $my_string]