The AppleEvent Object Model (AEOM) was a set of protocols built on top of Apple Events by which applications running under Mac OS could control each other's functions. Unlike other similar-sounding concepts such as ToolTalk, there was a clear, orthogonal distinction between nouns and verbs; thus, instead of providing separate commands for "close document" and "close window", there was a single "close" verb which could take references to "document" and "window" objects, among others. For instance, consider the following AppleScript sequence controlling a fictional drawing application: