ability to remove formatting when copy-past from other sources
Copy-and-Paste functions often carry invisible formatting in addition to the actual text. While this can be convenient, it is also often the source of glitches and hard-to-find bugs in the code. Similarly, copy-and-past from different sources leads to different formats in the same text area.
To avoid this, it can be convenient to have an option to remove all formatting prior to past using a "past from word" or "remove all formatting" option.