To render (a verb, pronounced REHN-dir, from the medieval French rendre meaning “to give back or yield”) has a number of usages along the lines of forming something out of something else originally given. In modern digital video production (for example) rendering refers to the process of building a series of video images based on instructions and algorithms of a computer program. For example, you may want to add a title to a section of video. The computer will rebuild or render the title as part of the video. Or it could be as simple as making a video out of a group of selected clips one after the other. In digital audio the concept is similar. When you apply a non realtime or file based (destructive) process to a sound file a new sound file is rendered with the attributes you defined in the software. In essence, rendering is the “non realtime processing and subsequent writing of a new file” function in computer programs.