Empty cachesentry?
When you click on this button in the Statistics dialog, all caches in memory belonging to the document will be cleared, which can be very sensible for cetain actions. Caches are created by Calamus for various purposes, e.g. so as not to have to calculate paging anew when the document is loaded again. These caches, if present, will be saved along with the document and actually only inflate the size of the document on the hard disk unnecessarily.
