All the ALPHA code and documentation (the present user's guide) may be found on www in the ALEPH home page, ( http://alephwww.cern.ch/ ): click on Offline Software, then on ALPHA Source Code Index (for the source code of ALPHA subroutines) or on ALPHA User's Manual (the present user's guide).
Important warning: It is strongly recommended to use always the current ALPHA production version, as given automatically by the alpharun facilities (see below). Using old versions may be dangerous: there may be incompatibilities, bugs or obsolete features which may be difficult to discover at first glance.