wait_content_relative_image
The path and file name, relative to the images directory, of the image to be displayed whilst the panel is loading. The image will initially be retrieved from the server, but will subsequently be retrieved from the browser cache, if enabled.
Default value
Blank – no image is shown.
Valid values
A valid path and image file name, in single quotes. An image can be chosen from a prompter by clicking the corresponding ellipses button in the property sheet.