Questions

1. Draw a 10 x 10 sized base face, and make it draggable with the loose facet. Add a text field that displays the offset of the box by using react, so that the text changes when the base is dragged.
2. A color of a face can be specified as face/color: as-color r g b, where r, g, and b are respectively the red, green, and blue content of the color (they are integers between 0 and 255). Alternatively, you can use face/color/1 for red, and /2 and /3 for green and blue.
   Write a program that adjusts the color of a white base face, changing each of the r, g, b values by changing three sliders. If this works, then write a reactive version. Note how the reactive code is much simpler.
3. Examine the Red/System code in the ch10/hello.reds source file. Compile and execute it.
4. Write a Red/System function that prints in Red/System. Call this from a Red script that says in Red before and...