It’s a rich text box with a few controls to enable or disable those features at certain points in the text. The whole thing was entirely built from components used elsewhere in the OS, or at least the earlier versions were. One competent employee could manage it in an afternoon; a week at the outside. If Microsoft has let it get so ridiculously bloated that it’s now unmanageable by one person, that’s on them.
It’s a rich text box with a few controls to enable or disable those features at certain points in the text. The whole thing was entirely built from components used elsewhere in the OS, or at least the earlier versions were. One competent employee could manage it in an afternoon; a week at the outside. If Microsoft has let it get so ridiculously bloated that it’s now unmanageable by one person, that’s on them.
Now, why would they expect that?
See also: Java and JavaScript.