Set Diagrammes
Here is a guide on how to create a set digramme consisting of overlapping regions of 2 shapes
https://forum.openoffice.org/en/forum/viewtopic.php?f=11&t=101059
articles:general:computing:software:dtp:libreoffice:setdiagrammes
Here is a guide on how to create a set digramme consisting of overlapping regions of 2 shapes
https://forum.openoffice.org/en/forum/viewtopic.php?f=11&t=101059