I started to put work in towards adding "Re-use Linux partitions" as a UI checkbox in the AutoYaST screen, since it looked like it shouldn't be that hard... only to discover that it looked like most of the work had already been done. I was working on that at the same time as I was testing my latest auto-install script that used that option, only to discover that it tried to create a -754.5MB partition! So I guess the reason that the checkbox isn't there is because the feature doesn't quite work yet? Perhaps the doc should remove the mention of that for the time being? For what it's worth, I'm trying as I go to go through the YCP files and tease out the options that should go into the XML formats so that I can help get everything down "onto paper".