Force Previous Uppercase-Lowercase (Xfp)

Instruction: Xfp Parameter: None Description: Analyzes the character before the cursor, and if it is a letter, sets a flag that forces the word processor to automatically write the text in uppercase or lowercase. This instruction is also relevant based on its execution priority, as the result can differ depending on whether it is executed before or after a delete instruction. Examples: Action: Dp1 Xfp Description: Deletes 1 character before the cursor, then sets the uppercase/lowercase flag based on the new preceding character. Action: Xfp Dp1 Description: Sets the uppercase/lowercase flag based on the character before the cursor, then deletes it.