To use the module the basic program should include the file `hash.bas'. To do this the program should contain the line
import hash.bas
somewhere at the start of the code. Note that there are no double quote characters before and after the file name. This tells the interpreter that the file is located in a module include directory. This include file contains all the declarations that are needed to use the module HASH.
In the following sections we list the functions that the module delivers.