There are two types of schematic in Smoke: a flow graph schematic and a scene-based schematic.
A flow graph schematic is a procedural compositing environment that contains a process tree of clips and nodes. Batch and the Modular Keyer use flow graph schematics.
A scene-based schematic is an icon representation of the hierarchy of objects in the scene. Action, Garbage Mask, and the Wipe Editor use scene-based schematics.
Although the basic functionality of the schematic is the same across modules, some functionality is specific to certain modules. For example, nodes that have input points for connecting to clips are found only in the Batch and Modular Keyer flow graph schematics. These module-specific differences are discussed in their respective chapters.