2020 February
These files define the "GuiCommands", that is, classes called in a graphical way through either buttons, menu entries, or context actions. They don't define the graphical interfaces themselves, they just setup tools that connect with FreeCAD's C++ code.
These tools should be split from the big DraftTools.py module.
The classes defined here internally use the GUI-less functions
defined in Draft.py, or in the newer modules under draftobjects/.
These tools are loaded by InitGui.py, and thus require the graphical
interface to exist.
Those commands that require a "task panel" call the respective module
and class in drafttaskpanels/. The task panel interfaces themselves
are defined inside the Resources/ui/ files created with QtCreator.
For more information see the thread: [Discussion] Splitting Draft tools into their own modules