I daresay there have been quite a few queries as to what is and is not allowed during the online exam. "Can I chew gum?" "Can I mumble?" etc etc. I wouldn't be surprised if it kind of also depends on the proctor you get. That being said, the information in the following link may be helpful to know
https://www.mba.com/exams/gmat-online/g ... proceduresFor example : "
The only items, other than your personal computer you may have within reach during your exam are the following:
Your ID
Prescription eyeglasses
One (1) handheld erasable whiteboard (no larger than 12 inches x 20 inches (30 cm x 50 cm)
Up to two (2) dry erase markers
One (1) dry erase whiteboard eraser
Comfort items ONLY if they were pre-approved as accommodations received in advance "
Of course, one may end up with more questions than they started out with! "Comfort items?!"