As I posted on the libreoffice development list, I’m currently working on adding a new option page in the Options dialog, to provide a quick way to switch key bindings between LibreOffice’s default and OpenOffice.org’s for Calc. For the most part, the default key bindings are identical between LibreOffice and OpenOffice.org as far as Calc’s concerned, but there are some differences, which are enough to annoy those users who are accustomed to the old key bindings from OOo Calc.
but it will not look exactly like this since this is just my first viewable version with no design effort put into it at all. So, hopefully we can morph this into something a little more usable and a little more bearable.
Right now, we only deal with key binding compatibility; however, we may expand this page to incorporate other compatibility options in future versions of LibreOffice.