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.