Started as a Engineering Tech. inspecting Highway Road, Bridge, and water projects. Then Surveyors assistant, draftsman, Mortgage Location Inspector, LPA. then CAD Tech. Learned on VersaCAD and ACAD then IDGS, MicroStation - the first UNIX versions, and PC Version 3, Version 4, MicroStation j, V8, XM, and now SS1. Taught MicroStation and UNIX for 5 years as well as programmed for it, Micro CSL, and MDL and now just a CADD Administrator and TMC - MCMC Committee, Secretary. I've written, edited, and audited manuals for CAD training for 20 years.
I was saved 8 years ago, now all is new. The Bible is infinitely better than any manual I ever seen or written, try to prove it an error and see.