It contains a directory per library, and each directory contains Fortran source files (one per routine, except for service routines called only by other routines, which are included in the same source file as the caller), or exceptionally C source files (two cases).
Individual routines are listed in a separate section. The following is a list of XAS libraries (external libraries are described elsewhere). The system dependent vos library has sources elsewhere.
| library name | purpose |
|---|---|
| fotlib | routines specifically used to access SAX telemetry on Final Observation Tapes |
| general | general purpose routines (e.g time-and-date, byteswap etc.) |
| graphserv | low level library for the graphics servers, and the relevant clients |
| hpgslib | routines specific of the SAX HPGSPC instrument |
| lecslib | routines specific of the SAX LECS instrument (unofficially supported) |
| mecslib | routines specific of the SAX MECS instrument |
| pdslib | routines specific of the SAX PDS instrument |
| xasgraph | high level graphics library |
| xaslib | routines independent of SAX data formats, but specific to handle mission-independent XAS data files and features |