GeePawHill

assume() starts the context for setting defaults, so assume().format(...) sets a default format
  mark(ms) starts the script step context, saying, at time ms, do the action
  then() just continues the previous mark
  head() is a custom action, not a built-in, it clears the existing column and puts a headline up.
  sketch() is a built-in, it will cause the following actor to be sketched.
  letters() is a custom object(), creating a text and modifying it.
  group(), name(), at() and format() are all built-ins, all objects support them.
  
  private Step stack2()
	{

GeePawHill

	private Step stack()
	{
		buildPhrase();
		
		head("A Program's Stack");
		drawStack();
		
		mark(22);
		head("The Household Program");
		

GeePawHill

	Pattern is context().action().object().
  
  assume() starts the context for setting defaults, so assume().format(...) sets a default format
  mark(ms) starts the script step context, saying, at time ms, do the action
  then() just continues the previous mark
  head() is a custom action, not a built-in, it clears the existing column and puts a headline up.
  sketch() is a built-in, it will cause the following actor to be sketched.
  letters() is a custom object(), creating a text and modifying it.
  group(), name(), at() and format() are all built-ins, all objects support them.
  

GeePawHill

		Actors allButOvals = new Actors();
		buildPhrase();
		clear();
		head("Dependencies");
		mark(146);
		OvalText thrower = new OvalText("Thrower", new Point(1000d, 200d), commentFormat);
		sketch(1000d, thrower);
		OvalText catcher = new OvalText("Catcher", new Point(1500d, 200d), commentFormat);
		sketch(1000d, catcher);
		Spot throwerSpot = new Spot(1000d, 850d);

GeePawHill

Desired code inside a thing that writes scripts:
Script writeIt()
{
  Format boxFormat = new Format(...);
  LabelBox box1 = new LabelBox("Box 1", new Point(400d,400d), boxFormat);
  LabelBox box2 = new LabelBox("Box 2", new Point(600d,600d), boxFormat);
  Arrow arrow = new Arrow(box1,false,box2,true,boxFormat):
  
  // here's the script proper
  cue(3); // wait until the clock says it's 3.

GeePawHill

package org.geepawhill.whiteboard.action;

import javafx.geometry.Bounds;
import javafx.scene.Node;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;

public class EnterBoundsBox implements Action
{

GeePawHill

package org.geepawhill.whiteboard.action;

import javafx.animation.Transition;
import javafx.geometry.Bounds;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.scene.text.TextAlignment;

GeePawHill

package org.geepawhill.whiteboard.util;

import javafx.geometry.Bounds;
import javafx.geometry.Point2D;
import javafx.scene.Node;
import javafx.scene.shape.Rectangle;

public class PointPair
{