boolean setMeshDisplayProperty(int shape, int tok) {
		String propertyName = null;
		Object propertyValue = null;
		switch (tok) {
		case Token.on:
			propertyName = "on";
			break;
		case Token.off:
			propertyName = "off";
			break;
		case Token.delete:
			propertyName = "delete";
			break;
		case Token.dots:
			propertyValue = Boolean.TRUE;
		case Token.nodots:
			propertyName = "dots";
			break;
		case Token.mesh:
			propertyValue = Boolean.TRUE;
		case Token.nomesh:
			propertyName = "mesh";
			break;
		case Token.fill:
			propertyValue = Boolean.TRUE;
		case Token.nofill:
			propertyName = "fill";
			break;
		case Token.translucent:
			propertyName = "translucency";
			propertyValue = "translucent";
			break;
		case Token.opaque:
			propertyName = "translucency";
			propertyValue = "opaque";
			break;
		}
		if (propertyName == null)
			return false;
		viewer.setShapeProperty(shape, propertyName, propertyValue);
		return true;
	}