This is a revised, expanded, and updated version of the original book Fortran 90 which appeared when
Fortran 90 was first launched as an international standard programming language some five years ago. This
book conforms to the proposed new Fortran 95 standard, but the new features are clearly marked as such so
that the book can be used without difficulty by those who are continuing to use Fortran 90. It is designed to
be useful both as a textbook for those new to programming and also as a fully up-to-date reference book for
more experienced computer users.
