CharcoalDrawingPreview  415 Magick++/lib/Magick++/Include.h   using MagickCore::CharcoalDrawingPreview;
CharcoalDrawingPreview 3245 magick/effect.c       case CharcoalDrawingPreview:
CharcoalDrawingPreview 1374 magick/option.c     { "Charcoal", (ssize_t) CharcoalDrawingPreview, MagickFalse },