DFD is a program for creating flowcharts,edit, interpret and execute.
Flow charts are used to graph algorithms used in various areas such as programming, to describe the behavior of the problem or system to be programmed. Apply also in economics, and any industrial process that has to be represented by a life cycle.
Exite a standard for representing flow diagrams using symbols that are connected by means of arrows, for sequencing a particular operation or functionality.
DFD helps make these diagrams easily, allowing you to add symbols and arrows, to sequence, making use of the buttons and menus of the program.
DFD 1.1 is the latest version of this software can be downloaded for free.