Translations:Sketcher Examples/31/en

A short explanation:
 * : To address the active document by an alias called doc
 * To address the relevant sketch by the alias sketch.
 * The method getObjectsByLabel returns a list of objects and we have to suffix index to pick the first object in the list. (We do not expect any other object having the same label and so do not have to care about other items in the list.)
 * : Returns the current value of the dimensional constraint ArcAngle (to the Report view)
 * : Sets the value of ArcAngle to
 * : To update the whole document to show the changes of dependant geometry as well.