Boruto has the Jougan. A dojutsu known to be possessed by the otsutsuki. Boruto was able to unlock it because he has very strong otsutsuki DNA since he's the descendent of both Hogoromo Otsutsuki and Hamura Otsutsuki. He has the genes of the Rinnegan and the Tenseigan.
According to the Boruto's Uzumaki Dojustu wikia[1], one of the animators of Boruto: Naruto Next Generations said, “Boruto's eye was neither a Byakugan nor a Tenseigan, but officially called "Jōgan".” He also explained that the eye is related to the Ōtsutsuki clan's dimension and its powers is the dōjutsu equivalent of
Naruto knows about Boruto's eye as well as Sasuke. The Jougan's abilities are a mix of all 3 Dōjutsu eyes. It can transport Boruto through dimensions like the Rinnegan, allow him to sense chakra like the Sharingan and see through obstructions like the Byakugan.
The Byakugan is Momoshiki's doujustu, the Jougan is Boruto's. Every time Momoshiki's taken over in the manga (which has only been two times), he's had Byakugan eyes, because those are his eyes.
Another situation that calls for filling is a drywall gap between sheets that's more than about 1/2 inch wide. If you tape over a wide gap like this without filling it first, the tape will flex, and the joint compound covering it will chip away.
Most levelling compounds can only be applied up to 30-40mm and will need to be used in more than one application or with other materials required. However there are some exceptions on the market such as BAL Level Max which can be applied from 2 mm up to 80 mm in one application.
Setting-type compound (the bagged kind you mix vs. the drying-type you buy premixed in a bucket) will easily fill a 1/2" gap without cracking. Make sure you load up the gap well before applying your tape, then finish it as you would any other joint.