Rule Help : E4 - Replaces up to 15 characters in the output message, without moving the pointer. Replacement continues until E5 command is encountered. You must enter character pairs in the "Characters" text box. The first character is the character to be replaced followed by the character to replace with. You can enter up to 15 character pairs. For example: To replace the letter A with an X and replace the letter B with a Y, the Characters text box would contain AXBY.