pi.pain.fillRectangle(x, a, w, h, LColor::mathmacrobg);
pi.pain.rectangle(x, a, w, h, LColor::mathframe);
+#warning FIXME
+#if 0
LCursor & cur = p.base.bv->cursor();
if (cur.isInside(this))
cur.drawSelection(pi);
+#endif
pi.pain.text(x + 2, y, prefix(), font);