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Augment a comment.
authorbangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Fri, 14 Dec 2012 02:41:42 +0000 (02:41 +0000)
committerbangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Fri, 14 Dec 2012 02:41:42 +0000 (02:41 +0000)
git-svn-id: https://svn.dealii.org/trunk@27821 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/doc/doxygen/headers/glossary.h

index b16d3bdcabd17ec580aa38b16188f5db117ad7df..5ed5ad2eb3ab5739a0ab2d0799901523b4a04bed 100644 (file)
  * a few places in the library make use of this. Note that in 2d, the
  * result is always @p true.
  *
- * The only places in the library where face orientations play a
- * significant role are in the Triangulation and its accessors, and in
- * the QProjector class and its users.
+ * There are two other flags that describe the orientation of a face:
+ * face_flip and face_rotation. Some documentation for these
+ * exists in the GeometryInfo class. An example of their use in user
+ * code is given in the DoFTools::make_periodicity_constraints function.
  *
  *
  * <dt class="glossary">@anchor GlossGeneralizedSupport <b>Generalized support points</b></dt>

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