+\fBMONO_ASPNET_WEBCONFIG_CACHESIZE\fR
+Mono has a cache of ConfigSection objects for speeding up WebConfigurationManager
+queries. Its default size is 100 items, and when more items are needed, cache
+evictions start happening. If evictions are too frequent this could impose
+unnecessary overhead, which could be avoided by using this environment variable
+to set up a higher cache size (or to lower memory requirements by decreasing it).
+.TP
+\fBMONO_CAIRO_DEBUG_DISPOSE\fR
+If set, causes Mono.Cairo to collect stack traces when objects are allocated,
+so that the finalization/Dispose warnings include information about the
+instance's origin.
+.TP