A very specific and technical topic!
To put it simply, this document defines the "grammar" and "spelling" of technical drawing. It establishes rules for: AS 1100.101 1992 Technical drawing General principles.pdf
AS 1100.101 requires hand or CAD lettering to be: A very specific and technical topic
This guide breaks down the key requirements for drafting, sheet layout, linework, and projection methods. and projection methods.