Products are represented by objects called depictables. An interactive depictable is a kind of depictable used by extensions. Interactive depictables are half-objects shared between the core D2D software which draws them and the extension which manipulates their contents. They are indexed either by frame number or by frame time, since each frame in a displayed loop has a time index. The class InteractiveDepictableExt defined in the file InteractiveDepictableExt.
H represents the extension half of the half-object.
Local extension developers use the method newElement to add or change an editable element in the depictable. There are also methods to query and remove elements, and methods to query the frame and time index of the depictable. Editable Elements Editable elements are on-screen objects visible to the forecaster, which can be moved, reshaped, or deleted. A family of classes related through inheritance represents editable elements. The file EditableElements.