Apple’s relentless quest in researching ways to waterproof devices continues, as new clues emerge from the U.S. Patents and Trademarks office, in the form of a patent application filed in 2014, and published this week.

There is hardly any documentation in regard to this issue affecting primarily OS X El Capitan, which causes a range of devices, including the MacBook, the iMac Retina and more, to boot to a black screen, with the cursor on the top left corner of the screen. According to a number of complaints, including a detailed chronicle by NetworkWorld, describing the various stages that lead to the astoundingly simple solution of the issue.

Under the spotlight, we have five apps supporting the Apple Pencil and iPad Pro’s unique touchscreen display, which we are going to list here, in no particular order.

The amount of changes made to iOS, with respect to other products like the iPad Mini 4 and iPad Air, are enough to warrant a fork of iOS specific to the iPad Pro, which would give developers the same flexibility they have, when building watchOS and tvOS applications.