Carbon dioxide diffuses out of the tissues and into the blood, where it is dissolved in the plasma. While some of the carbon dioxide remains dissolved in the plasma, most carbon dioxide diffuses into our red blood cells.
A screencast is a digital movie in which the setting is partly or wholly a computer screen, and in which audio narration describes the on-screen action. It's not a new idea.
But what is Sitecore really? From a developer's perspective, Sitecore is a platform which helps with the implementation of internet and intranet systems. Data modeling is done visually through its interface and all customizations are done in .NET, with the use of Sitecore's API to read and write data.