Types of Canvases (Stacked/Content Difference)

(i) Content Canvas (Default Canvas) [A content canvas is the required on each window you create]
(ii) Stack Canvas [you can display more then one stack canvas in a window at the same time]
(iii) Tab Type Window [In Tab canvas that have tab pages and have one or more then tab page]
(iv) Toolbar Canvas [A toolbar canvas often is used to create Toolbar Windows. There are two type of Toolbar window.
a. Horizontal Toolbar Canvas: - Horizontal Toolbar canvases are displayed at the top of the window, Just Under the Main Menu Bar.
b. Vertical Toolbar Canvas: - While vertical Toolbar are displayed along the Left Edge of the window.