The intention is that this can be used as a grab bag of properties which are not handled properly, yet we want the roundtrip of them to alien formats.
See http://lists.freedesktop.org/archives/libreoffice/2013-July/054428.html for more details.
f841985 svl: add an SfxGrabBagItem
include/svl/grabbagitem.hxx | 44 +++++++++++++++++
svl/Library_svl.mk | 1 +
svl/source/items/grabbagitem.cxx | 100 ++++++++++++++++++++++++++++++++++++++
3 files changed, 145 insertions(+)