{ $class-description "A presentation is a " { $link button } " which represents an object. Left-clicking a presentation invokes the default " { $link operation } ", and right-clicking displays a menu of possible operations output by " { $link object-operations } "."
$nl
"Presentations are created by calling " { $link <presentation> } "."
{ $description "Invokes the " { $link primary-operation } " associated to the " { $snippet "object" } ". This word is executed when the presentation is clicked with the left mouse button." } ;
{ $description "Invokes the " { $link secondary-operation } " associated to the " { $snippet "object" } ". This word is executed when a list receives a " { $snippet "RET" } " key press." } ;
{ $description "Displays a " { $link summary } " of the " { $snippet "object" } "in the status bar of the " { $link world } " containing this presentation. This word is executed when the mouse enters the presentation." } ;
"The " { $vocab-link "ui.gadgets.presentations" } " vocabulary implements presentations, which are graphical representations of an object, associated with the object itself (see " { $link "ui-operations" } ")."
$nl
"Clicking a presentation with the left mouse button invokes the object's primary operation, and clicking with the right mouse button displays a menu of all applicable operations. Presentations are usually not constructed directly, and instead are written to " { $link "ui.gadgets.panes" } " with formatted stream output words (see " { $link "presentations" } ")."