Application Program Interface
The Application Program Interface (API) has been developed to facilitate the reading and writing of NeXus files. The API supports the reading and writing of HDF4, HDF5, and, since version 3.0.0, XML files. The core routines have been written in C but wrappers are available for a number of other languages including Fortran 77, Fortran 90, Java, and IDL.
For the documentation please see http://download.nexusformat.org/doc/html/napi.html