This is a sdl diagram in hl7 interface. It describes the Hl7 message processing. A flowchart is a diagram that depicts a work flow. Flowcharts can also be used as a diagrammatic description of an algorithm or a step-by-step process for solving a problem. The flowchart displays the stages as a series of boxes of varying sizes, with arrows joining the boxes in the correct order Visit EdrawMax for more flowchart ideas!