This is useful in editing mode only, and you probably won't use it at all. One line of HyperTalk to be executed when the object is clicked. Normally this property is empty, but you can set it to override the window's MouseMessage. ForeColor usually pertains to text coloring. BackColor is the shade the object is drawn against, such as the empty space in a List, or a button's body.
Different objects have other properties as well.
You can get a complete description of each object type, with its syntax, properties, and use, on the following cards. Inc. All rights reserved.