Re: 14.0.4 titlebar icon/button sizes too small

What part of settings provides control over $SUBJECT? I have panel and desktop icons acceptably sized (very much bigger than default), but can't find anything that works for those in the titlebar (aka window decorations minimize, maximize, close) no matter which theming is applied. Places tried: 1-appearance & themes -> icons -> advanced -> size (a logical place to try, but which lacks a "titlebar" selection, and in which several selections offer no option to change size at all) 2-appearance & themes -> theme manager (tried in Keramik, Plastik and KDE_Classic) 3-appearance & themes -> window decorations -> buttons Surely there must be a way to enlarge titlebar buttons, but how?