lucy24 - 8:05 am on Sep 30, 2013 (gmt 0)
No, never. Envelopes in the form <IfModule> are a feature of boilerplate htaccess files made for generic distribution. Once it has arrived in your personal web space, get rid of all these envelopes. Either you have a particular module or you don't. (And if you don't, you wouldn't be using the CMS that came with this htaccess in the first place :))
Technically you need
but in practice any host that allows htaccess will already have this enabled in the config file.
You do absolutely, unequivocally need
Without this line, no RewriteRules will be recognized.