What is portability?.- Some side effects of striving for portability.- Machine characteristics and portability.- Machine requirements for reliable, portable software.- Semantics of floating point arithmetic and elementary functions.- Machine parameters for numerical analysis.- Preparing conventions for parameters for transportable numerical software.- Programming languages and portability.- Algol 68 as a language for numerical software.- Writing the elementary function procedures for the ALGOL68C compiler.- Criteria for transportable algol libraries.- Fortran portability via models and tools.- Port — A portable mathematical subroutine library.- Fortran poisoning and antidotes.- Two numerical analysts' views on the draft proposed ans fortran.- Intermediate languages: Current status.- Computer-assisted portability.- Mathematical software transportability systems have the variations a theme?.- Features for fortran portability.- The IMSL fortran converter: An approach to solving portability problems.- Aids to portability within the NAG project.- Multiple program realizations using the tampr system.- Software design to facilitate portability.- The production and testing of special function software in the NAG library.- Portable special function routines.- The importance of standardized interfaces for portable statistical software.- Exploring the impact of portability.- On the enhancement of portability within the NAG project — A statistical survey.- A study of portability in technical and scientific computing.