There are several main parts to the Sophie interface:

 * The Workspace: The workspace is a background. Dragging items onto the workspace creates a new Sophie
book. Sophie books appear inside the Sophie workspace. Each book has its own window. A book window has
several main parts.

[[Image(source:SpecificationFiles/GuiDiagrams/WorkSpace.png, 70%)]]

 * Flaps: Flaps are containers for sets of tabs. The size of a flap can be adjusted by dragging its innermost
vertical border toward the center of the workspace.

 * Tabs: Tabs allow for the selection of data sets to be displayed. Data associated with a tab is accessed
through a single click of the tab. Tabs may contain one or more palettes. Tabs present a title that is visible to
the user (such as "tools", "books", "pages", etc).

 * Palettes: Palettes display data sets, such as lists of elements used in Sophie (for example, all movies in a book),
or tools (like the spellchecker). Sophie also supports a flap for managing timelines. Palettes are contained in
tabs. Palettes contain information and access to resources. The palettes in a tab are aligned vertically. Each
has a title visible to the user (such as "Searching", and "Markers").

 * Halos: Halos are icons that invoke HUDS. Different items in Sophie have different kinds of Halos.

 * HUDs: HUDs are windows that provide information and control for a specific type of object.