add replace operations doc
add replace operations doc

Change-Id: I3b2ffca803bf720f7ca6f443d10dee44db189739
Reviewed-by: Niels Weber <df24410c43e1f71d7f720aa26e4fcb77ce70f242@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw