I know this should be the most basic thing, but I just can't find anything on it. I find, say, any digit in a text, and want to add a period in front of it. But changing \d to .\d changes all digits to the literal expression .\d (same with \.\d and with putting \d in ). No idea.
Thanks a lot in advance
change (\d) to .$1
Hello. Thanks both of you. With that information, I also found out a bit about the use of $0 (multiple characters).