Are you looking to redirect your website to another address?
(With Apache web-server the recommendation is to *always* use [L] flag redirect rule. Last Rule.)
L = (last rule) Original URL stays in the browser address field.
R = (force redirect) changes the URL to the new URL. (=Google rank killer.)
RL = Use [R] with [L] rather than just R flag. Makes a redirect to new (visible) address and then stops with [L]ast rule.
R=301,L = "The resoure you requested has been moved permanently to this new address."