Purpose

As suggested, mouldings have a distinct purpose, are, in fact, functional features, and may be defined as Sheltering or Crowning, Bracketing or Supporting, and Binding.

In any composition where they may be necessary these functions should be taken into consideration.

The profiles should always be concise whether the character of the curve be refined or robust.

In classic architecture the relative proportions of the mouldings to the other features are defined, and these proportions will be found useful in other than purely architectural design.