JEE has released a tutorial video of how to mark the Optical Response Sheet (ORS). The three-minute video explains in detail the process students need to follow while filling the ORS sheet during the exam. Aspirants should keep the following in mind:

Bubbles are
to be properly darkened. Care should be taken that the barcode on ORS is not damaged
or tampered with. Aspirants should use only black ball point pen. Pencil, gel pen,
fountain pen or ball pen of any other colour are strictly not allowed.

To see the video click here.