Refal Plus Library Functions

This chapter describes the library of functions, which is an essential part of the Refal Plus system, and consists of several modules.

At present, the library of functions comprises the modules described in this chapter, but, in future, it may be extended with other modules.

If a user-written module contains references to library functions defined in a library module MMMM, then, at the beginning of the user-written module, there must appear the directive 
      $use MMMM;
which imports into the user-written module the declarations of all functions defined in the library module MMMM.