"XOP extension" is a software package which is not part of the XOP standard distribution, but it can be installed optionally and run under the XOP interface.
For a complete list of available extensions, functionality, download and installation procedures see the XOP 2.3 web page.
Access to documentation:
For accessing the full documentation below, the corresponding package has to be installed in your system:
SHADOWVUI - Visual User Interface for the SHADOW [Reference] ray tracing package
IMD - specular and non-specular (diffuse) optical functions of an arbitrary multilayer structure by D. Windt [Reference]
TOPO (D. Windt)
INES - Inelastic scattering
PROW - A data integration program based on profile fitting for the evaluation of weak and/or overlapped two-dimensional macromolecular diffraction patterns by Dominique Bourgeois. [Reference]