NeXus

These are the Nexus related functions:

 
* = nexus_add_devices( exp_c01, exp_c02) 
  Adds devices to a list which is used for the NeXus output. These
  devices corresponf to data sources of the components
* = nexus_clear_devices()
* = nexus_show_devices()

* = nexus_add_components( saxs_test) 
  Adds components to a list which is used for the NeXus output
* = nexus_clear_components()
* = nexus_show_components()

* = nexus_show_avalable_components()
  Displays the AvailableComponents from the configuration server.

set write_nexus on
  Controls whether NeXus files are created during a scan.