This movable modal window allows examination or editing of values. The Edit, Find and Info menus are available to the user.
 
Banner*99*
The banner of the window contains a title depending on the origin of the window, as follows:
o If the window displays the value of a persistent (or attribute) called <name>, the title is Value of Persistent <name>.
o If the window displays the value of the nth item of a list, the title reads Value of List Item n.
o If the window is opened by execution of accept or display operations that have a prompt-string input, the title is the prompt string.*99*
o Otherwise, the title is Value.
Window Regions*99*
A Value window has three regions:
o scroll list of types
o value panel
o buttons *99*
Opening*100*
A Value window is opened:
o when a double-click occurs on a persistent, Persistent operation, attribute, Get operation, or Set operation; on an element of a list displayed in graphic mode, or, at runtime in step mode, on an executed root or terminal;
o when a Shift-Option-Command-click occurs on a window or window item while in the Window editor;
o during runtime creation of attributes and persistents;
o during execution of the accept or display primitives.
Modes*100*
Values can be displayed in either standard or graphic mode.
Standard Mode*100*
In this mode, the value is displayed either as text or as a sequence of inverted triangles (attribute icons), depending on the type of data.
o A value of the simple data types boolean, integer, none, null, real, and string is displayed as text.*100*
 
o An instance of a class is displayed as a sequence of attribute icons. *100*
 
o A value of the simple type list can be displayed in standard mode if it does not contain any class instances (at any level). The standard mode of display of a list is textual. *101*
 
Graphic Mode*101*
In graphic mode, a value is displayed either as a picture or as a sequence of inverted triangles, depending on the type of data.
o A list is displayed as inverted triangles. If the list contains instances, graphic mode is the only possible mode of display.*101*
 
o Instances of system classes are displayed as windows, dialogs or menus (see chapter 5, “System Classes”).*101*
o Instances of certain Macintosh types are appropriately displayed.
Editing*101*
When the display is textual, the standard Macintosh text editor applies. In a graphic display of a list, an element can be deleted by deleting a triangle; an element can be added by clicking in space; and the value of an element can be edited by double-clicking on a triangle to open a Value window. If an instance is displayed in standard mode, double-clicking an attribute icon opens a Value window for editing.
Effects of Buttons*102*
OK*102*
Clicking this button closes the window, saving changes. Option-clicking OK is equivalent to clicking OK on all Value windows on the screen.
Cancel*102*
Clicking this button closes the window without saving changes. Option-clicking Cancel is equivalent to clicking Cancel on all Value windows on the screen.
Graphic*102*
Clicking this button causes a list, Macintosh structure, or system-class instance to be displayed in graphic mode.
Types*102*
The scrolling list displays all types. Changing the selected type displays a default value for the new type in the value panel. If the type list is gray, no type change can be made.*102*
 
The Text Window*102*
A Text window contains any text that can be saved to a Macintosh text file.
Opening*102*
A Text window is opened when New Text… or Open Text… is selected from the File menu.
Naming*102*
If the window corresponds to a text file, the title is the same as the file name.
Editing in the Text Window*103*
All standard Macintosh text editing operations apply in Text windows.
Effects of Context Switching*103*
Text windows are displayed both while editing and while executing.
