I'm enjoying your series on LibreOffice. Last semester I spent about 90 minutes talking to my graduate students about styles in word processing, and once they understood what it was all about they were completely blown away by the power of it. They kept asking me, "why has no one ever told us about this before?" I have a couple of screencasts about using regular expressions in LibreOffice in case you are interested. Go to YouTube and search for "jonkulp" and "libreoffice" and you will find them. One of them has what I feel is a pretty magical transformation of a multiple-choice test from one layout style to another using some regex. Anyway I am looking forward to your future episodes.