In my quest for properly fitting trousers, I initially found it difficult to make sense of the seemingly myriad waistband options available for unbelted or beltless trousers. These included: Daks top, D-ring adjusters, button sidetabs, waistband level v. below-the-waistband positioning. What were these and what do they look like?
This LondonLounge thread contains the best photos of sidetabs that I have seen to date. For Daks top trousers in particular, check out this thread.