'Layout' is the process a browser undergoes to calculate the position and size of each element in a document before it can start painting pixels. The process of layout can be costly, especially on low powered mobile devices.
WebRTC is a open source project aiming to enable the web with Real Time Communication (RTC) capabilities.
In the world of software management there exists a dread place called "dependency hell." The bigger your system grows and the more packages you integrate into your software, the more likely you are to find yourself, one day, in this pit of despair.