A copy and paste non-printing characters collection for easy access. For example: Zero-Width Space (ZWSP) Character, Zero-Width Joiner (ZWJ) Character, Zero-Width Non-Joiner (ZWNJ) Character, Left-To-Right Mark (LTR Mark/ LRM), Right-To-Left Mark (RTL
Mark/ RLM). Just click on a non-printing character to copy it to the clipboard and paste it anywhere. at the phone keyboard at .