When you select an AP element, the Property inspector displays AP element properties.
The default unit for position and size is pixels (px). You can instead specify the following units: pc (picas), pt (points), in (inches), mm (millimeters), cm (centimeters), or % (percentage of the parent AP element’s corresponding value). The abbreviations must follow the value without a space: for example, 3mm indicates 3 millimeters.
In a browser, higher-numbered AP elements appear in front of lower-numbered AP elements. Values can be positive or negative. It’s easier to change the stacking order of AP elements using the AP Elements panel than to enter specific z‑index values.
Default does not specify a visibility property. When no visibility is specified, most browsers default to Inherit.
Inherit uses the visibility property of the AP element’s parent.
Visible displays the AP element contents, regardless of the parent’s value.
Hidden hides the AP element contents, regardless of the parent’s value.
Use a scripting language, such as JavaScript, to control the visibility property and dynamically display AP element contents.
Click the folder icon to browse to and select an image file.
Leave this option blank to specify a transparent background.
Visible indicates that the extra content appears in the AP element; effectively, the AP element stretches to accommodate it. Hidden specifies that extra content is not displayed in the browser. Scroll specifies that the browser should add scroll bars to the AP element whether they’re needed or not. Auto causes the browser to display scroll bars for the AP element only when needed (that is, when the AP element’s contents exceed its boundaries.)
Specify left, top, right, and bottom coordinates to define a rectangle in the coordinate space of the AP element (counting from the upper-left corner of the AP element). The AP element is “clipped” so that only the specified rectangle is visible. For example, to make an AP element’s contents invisible except for a 50‑pixel-wide, 75‑pixel-high visible rectangle at the upper-left corner of the AP element, set L to 0, T to 0, R to 50, and B to 75.