-# \DeclareLaTeXClass{article (siamltex)}
-# Siam Article textclass definition file.
-# Cut & paste from various LyX layouts plus some minor modifications
-# Author : Kornelia Pietsch <pietsch@mathematik.tu-chemnitz.de>
-
-Columns 1
-Sides 1
-SecNumDepth 2
-TocDepth 2
-MaxCounter Counter_Section
+# \DeclareLaTeXClass{Society for Industrial and Applied Mathematics (SIAM)}
+# \DeclareCategory{Articles}
+# AMS-Article textclass definition file. Taken from initial LyX source code
+# and from the Article textclass definition file, following the AMS sample
+# paper "testmath.tex" of January, 1995
+# Author : David L. Johnson <dlj0@lehigh.edu>
+# Probably broken by Jean-Marc Lasgouttes <Jean-Marc.Lasgouttes@inria.fr>
+# modified and modularized by Emmanuel GUREGHIAN <gureghia@boston.bertin.fr>
+# Tinkered with Sep. '07 by Paul Rubin <rubin@msu.edu>
+# Modified from amsart.layout May '08 by Andrew Corrigan <acorriga@gmu.edu>
+
+
+Format 49
+Columns 1
+Sides 2
+PageStyle Headers
+DefaultStyle Standard
+Provides makeidx 1
+Provides amsthm 1
+
+# It is unclear at this point whether these are correct. It is how it
+# was, though, before these got moved out of amsdefs.inc.
+Provides amsmath 1
+Provides makeidx 1