Working Drawings - General Questions

These are groups of components of a larger machine:

In an assembly section, these parts should have their section lines left out or shown solid black:

An accurate record of changes made to released drawings is tracked via this:

This should show what changes were made, when, and by whom:

In working drawings, these show all necessary information not given directly on the drawing with its dimensions and notes:

These drawings are given to contractors to perform work or manufacture individual parts:

In these drawings it is necessary to show cut surfaces and distinguish between adjacent parts: