... graphs without usingWorld, but World is what ultimately allows you to draw all of it with what is perhapsthe single most powerful command in M3G: render(myWorld). This call clears thescreen with ... you canduplicate it as youplease without worrying about excessive memory usage. As an example, assume that youwant to create a new instance of myMesh, but with a different material color. A ... factor is a poor fit with per-vertex colors, as it has to be premultiplied intothem in certain cases. Especially avoid using alpha factors, at least other than 0 and 1,incombination with per-vertex...