Method is

ij/src/main/java/ij/macro/Functions.java:5029–5073

()

	}

	double is() {
		boolean state = false;
		String arg = getStringArg();
		arg = arg.toLowerCase(Locale.US);
		if (arg.equals("locked"))
			state = getImage().isLocked();
		else if (arg.contains("invert") && arg.contains("lut"))
			state = getImage().isInvertedLut();
		else if (arg.indexOf("hyper")!=-1)
			state = getImage().isHyperStack();
		else if (arg.indexOf("batch")!=-1)
			state = Interpreter.isBatchMode();
		else if (arg.indexOf("applet")!=-1)
			state = IJ.getApplet()!=null;
		else if (arg.indexOf("virtual")!=-1)
			state = getImage().getStack().isVirtual();
		else if (arg.indexOf("composite")!=-1)
			state = getImage().isComposite();
		else if (arg.indexOf("caps")!=-1)
			state = getCapsLockState();
		else if (arg.indexOf("change")!=-1)
			state = getImage().changes;
		else if (arg.indexOf("binary")!=-1)
			state = getProcessor().isBinary();
		else if (arg.indexOf("grayscale")!=-1)
			state = getProcessor().isGrayscale();
		else if (arg.startsWith("global"))
			state = ImagePlus.getStaticGlobalCalibration()!=null;
		else if (arg.indexOf("animated")!=-1) {
			ImageWindow win = getImage().getWindow();
			state = win!=null && (win instanceof StackWindow) && ((StackWindow)win).getAnimate();
		} else if (arg.equals("inverty")) {
			state = getImage().getCalibration().getInvertY();
		} else if (arg.startsWith("area")) {
			Roi roi = getImage().getRoi();
			state = roi!=null?roi.isArea():false;
		} else if (arg.startsWith("line")) {
			Roi roi = getImage().getRoi();
			state = roi!=null?roi.isLine():false;
		} else if (arg.startsWith("fft")) {
			state = getImage().getProperty("FHT")!=null;
		} else
			interp.error("Invalid argument");
		return state?1.0:0.0;
	}

	final boolean getCapsLockState() {
		boolean capsDown = false;