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Guile expects to find modules in its search path; as I understand things some of this is hard coded in c, and some defined in boot-9. Is there a more general abstraction to be had, as loading a file from a search path is needed by many programmes. If guile is being used to extend an existing programme, or something that has to be compatible with an existing suite, it must be able to co-operate with the existing code's ideas about where files go. The functionality is broadly similar, so should we have some c-level code that does something like (open-file-from-path file path . mode) This should be enough for the majority of programmes. Many refinements are possible (directory caching with a per-path hash table for fast lookup, or complex priority predicates [ if there is an uncompressed version in directory y load that, otherwise use the newest version in directory x, or ....]) and may be needed in some cases. Or is this too trivial to break out as a seperate function? Julian Satchell <satchell@dera.gov.uk>