Abstract
We describe the further development of awidely used package of DNA/protein sequence analysis programs (1). Important revisions have been made based on user experience, and new features, multi-user capability, and aset of large scale homology programs have been added. The programs are very user friendly, economical of time and memory, and extremely transportable. They are written in a version of FORTRAN which will compile, with a few defined changes, as FORTRAN 66, FORTRAN 77, FORTRAN IV, FORTRAN IV⊕, and others. They are running on a variety of microcomputers, inicomputers, and mainframes, in both single user and multi-user configurations.