Note: if you just want simple word replacement, like emoticons, put the word in the Regex field, use ig for the flags, and put the replacement in the Replacement field.
Name
Regex
Flags
Replacement
Active
Multiple filters can be added at once below. They should contain 3-4 fields separated by whitespace: (name) regex flags replacement. If any field contains whitespace, it must be escaped by a backslash, for example "what\ a\ story\ mark"