This collection of fields specifies the width of border to be displayed around an object that is visible on the screen.
The border field applies the same border width around all sides of the object, while the borderTop, borderRight, borderBottom and borderLeft fields provide a way to specify a different border width for individual sides of the object.
The border fields can be defined for the following tags.
box, button, checkBox, choiceBox, clientFrame, ellipse, img, input, line, span, table, tabRow, video.
For the line tag, only the border field applies. This specifies the line thickness.