-"\n"
-"Properties are stored in two ways:\n"
-"@itemize @bullet\n"
-"@item mutable properties.\n"
-"Grob properties that change from object to object. The storage of\n"
-"these are private to a grob. For example pointers to other grobs are\n"
-"always stored in the mutable properties.\n"
-"\n"
-"@item immutable properties.\n"
-"Grob properties that are shared across different grobs of the same\n"
-"type. The storage is shared, and hence it is read-only. Typically, this\n"
-"is used to store function callbacks, and default settings. They are\n"
-"initially read from @file{scm/grob-description.scm}.\n"
-"@end itemize\n"