Exactly! Today we have room for everyone to have his or her own copy of every document he or she needs to access. Client/server has changed and now you can serve-up your own copies of stuff. RegEx, though hateful, is functional and it can be used to grab and quote or grab and manipulate any piece of an existing document. We don't need to invent those parts. :-)
Not only that but thanks to simple regexp (such as 's/source/target/g/') it is much easier to replace copies of the same text. With proper tools (which Wikipedia undoubtedly has) it should be easy to change text with one click of a button.