A number of people have contributed to this document, either with helpful general remarks or corrections or amplifications on points of detail. Where their contribution was precisely localisable -- in particular where I have merely sub-edited their comments into place -- they are also acknowledged at the appropriate specific points in the text.
Sergio.Gelato@Durham.ac.uk) added remarks
about optimizing C, and compiler switches.csj@star.arm.ac.uk) added pointers to model
atmosphere codes.jjl@astro.soton.ac.uk)aesansom@uclan.ac.uk).bs@astro.keele.ac.uk). Pointers to model
atmospheres.mbt@ast.cam.ac.uk) made a number of points
about my coverage of Fortran, and several insightful
remarks about numerical programming.Robin.Williams@astro.cf.ac.uk) general
comments, and information about Alpha switches.