-@li @ref page_cppconst_guisystem
-@li @ref page_cppconst_os
-@li @ref page_cppconst_cpu
-@li @ref page_cppconst_hardware
-@li @ref page_cppconst_compiler
-@li @ref page_cppconst_featuretests
-@li @ref page_cppconst_msvc_setup_h
-@li @ref page_cppconst_miscellaneous
+These are preprocessor symbols used in the wxWidgets source, grouped by
+category (and sorted by alphabetical order inside each category). All of these
+macros except for the @c wxUSE_XXX variety is defined if the corresponding
+condition is @true and undefined if it isn't, so they should be always tested
+using @ifdef_ and not @if_.