The library contains about 2500 subroutines and complete programs which are grouped together by logical affiliation into little over 450 program packages. 80% of the programs are written in Fortran77 and the remainder in C and in assembly code, usually with a FORTRAN version also available.
A unique code is assigned to each package. This code consists of one letter and three or four digits, the letter indicating the category within our classification scheme. A package consists of one or more related subprograms with one package name and one or more user-callable entry names, all described briefly in a ``Short write-up'', and if necessary, an additional ``Long write-up''.
A complete list of program packages with titles and entries sorted by class is given at the beginning of this manual. Then follow all the short write-ups, while the Index at the end of the volume shows the page number (as printed near the inner margin) were a package is defined (in boldface) or referenced.