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+====== Welcome ======
+Welcome to the topas wiki!
+This site has been set up for the community to share ideas and tips for Topas and powder diffraction analysis more broadly.
+Read access is open to everybody, but you need to set up an account to contribute.  **We've had to disable old accounts and turn off the auto-registration to prevent hacking.  Information on how to register is on the [[how_to_contribute|how to contribute page]]**.
+Writing wiki pages is easy and there's a quick guide at [[how_to_contribute|how to contribute (registered users only)]].  Please do contribute!
+In different areas of the wiki (see the links on the left you can):
+  * Browse through a list of topics contributed by people
+  * Browse macros contributed by people
+  * See online versions of the manual
+  * Find data files associated with John, Robert and Andreas' [[book|Rietveld textbook]]
+  * Find various information repositories contributed by the community
+  * Find links to other Topas-related resources
+A few of the wiki pages are read-only, but please contribute to the others.  As with any wiki, the information is only as reliable as the community who maintain it, so please do correct any errors you find.
+The site was updated following a shift to php 8 in January 2024, so please let John know if you find any problems.
+To reference the topas wiki origins or jedit you might like to use "Evans, J. S. O. Advanced input files and parametric quantitative analysis using Topas. //Materials Science Forum 651//, **1** (2010)" or one of the other articles in the [[http://www.scientific.net/MSF.651|special issue of materials forum]] which documents the Trento meeting where the wiki was first suggested.  There's description of the topas symbolic language etc in: Coelho, A. A., Evans, J. S. O., Evans, I. R., Kern, A. & Parsons, S. The TOPAS symbolic computation system. //Powder Diffraction// **26**, S22-S25, doi:10.1154/1.3661087 (2011).
+Thanks to: Durham University for hosting the wiki; Anna Tuominen for technical support; Alan Coelho for supporting the wiki; Bruker and Arnt Kern for supporting the wiki.
+{{:durham_html_1f935f03.png?150|}}   {{:ta.jpg?50|}}    {{:bruker.jpg?150|}}