Onenote has many convenient features, but the most irritating feature prevents me from using it. As you might know, or not, Indic scripts have characters below the line too. If every damn thing is red-underlined in the name of spell check, I can't read what's written, and therefore can't use it. It's not like I can ignore everything either - if I ignore everything in PC, it still shows up underlined in my mobile.
Please, just let me turn off the red underline.