Translations:Glossary/4/en

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DAG
See Directed Acyclic Graph.
Degrees Of Freedom
The number of ways geometry in a Sketch may vary. For example, if we have a Sketch consisting of only one point, and the point has no Constraints applied to it, the point has two DOF because it is free to move both vertically and horizontally. Similarly, a Sketch consisting of only a single unconstrained circle has three DOF because the circle can move vertically and horizontally and, additionally, the radius is not defined. It is good practice to constrain a Sketch until it has no DOF remaining, in which case it is said to be Fully Constrained.
Dependency Graph
A third-party graphing tool used to show how objects in a FreeCAD model use or are related to one another. For more information, refer to the Dependency Graph Wiki page.
Difference
1.  The result of, or remainder of, a subtraction.
2.  A Boolean Operation in the Part workbench which is used to subtract one geometry from another; it results in a Cut.
Directed Acyclic Graph (abbreviated as "DAG")
A type of Dependency Graph where the relationship of objects flows in a generally linear direction from start to end with no circular dependencies. When following a DAG there is no flow from one object A to any other objects and then back to that same object A again. In FreeCAD, a graph of the model must always be a DAG.
DOF
Degrees Of Freedom
Draft
1.  A FreeCAD workbench used primarily for 2 dimensional work.
2.  A relief angle on a mold to allow removal of the finished product. See PartDesign Draft.
Drawing
Describes a representation of geometry through the use of two-dimensional views. Also called plan or blueprint.