Replaces the "What" text fragment everywhere in the "In" text with the "By" text fragment, and returns the result.
- If you do not specify a "By" then "What" will be removed everywhere from "In".
- The text fragment to replace.
- The text to do the replacement on.
- By (optional)
- The text fragment to replace by.
- CaseSensitive (optional flag)
- Whether TExpressive should treat upper and lower case letters differently (TExpressive treats them equally by default).