Mark stressed letters

If this is implemented, it will be good to mark stressed symbols with a color or something to tell users that the mark is added to indicate stressed letters, but it is not part of the correct writing of the word. In many languages there will be no confusion, but languages like Spanish or Portugues already include accent marks: "tomo" and tomó in Spanish are different words. "tomo" means volume (of a book) and "tomó" can mean he took, he grabbed and another meaning is he drank. If you take the first example and display "tómo" instead of "tomo" a learner might think that's the proper writing of the word because Spanish already uses accent marks. It depends on the language but, please, consider that some languages are written with accent marks and it will become confusing to learners if nothing indicates the difference between proper writing and visually stressed letters.

yes, stress marks should be added to all articles in the articles section too.

This would be very helpful.

Yes it would be great. By the way, I saw words with stressed letters highlighted in one of cards set. I do not know how exactly it is done but seems it is used some 'specific' character as a 'stress mark' there