Gui Command

The GuiCommand is one of the most important function of FreeCAD. Is the main interaction point of the User. Every time the user selects a menu item or press a toolbar button it activates a GuiCommand. Some of the attributes of a GuiCommand are:
 * Contains a Icon
 * Defines the scope for an Undo/Redo
 * Have a help page
 * opens and controls modal Dialogs
 * Macro recording
 * and so forth....

Quality requirements
There are a lot GuiCommands (Features) in FreeCAD which are experimental or used shortly for implementation purpose. This GuiCommands a mostly in the dedicated Workbenches like Part, Mesh or Cam. To ensure a good user experience the Workbenc Complete was created. This is the default start Workbench of FreeCAD and incorporate all GuiCommand which meat cretin Quality requirements which are described here:

Help page
Every GuiCommand have to have a Help page
 * GuiCommand model

Example:

Part_Cylinder