Complier switches

I want to trace my own code but not behind or background code of Delphi. I do not understand why this is not the default setting. Where do I get this control please.

Project Options

Building > Delphi Compiler > Compiling

turn of Use debug .dcus

Vincent Parrett thanks for that that’s like finding a piece of straw in a hay barn
With so many switches in so may places you need a page to list them all
with a separate page for tools > options so people like me can find things
Thanks again as it saves so much on tracing time