3.4 The Vanilla Sketch
basic elements of a sketch: drawing, annotations, arrows and notes
There are an infinite number of ways you can create a single sketch. However, most simple sketches will comprise the drawing along with optional annotations and notes.
The drawing is what most people think of as the result of a sketching activity. For example, the figure below is a sketch of the main screen of an interactive shopping system, expressed solely as a drawing.
Some people are entirely visual, where their drawing will rarely use notes or annotations. Others (especially those brought up in non-design or non-arts disciplines) ...