(ddd.info)Creating Single Displays

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7.3.1.1 Creating Single Displays
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To create a new display showing a specific variable, select the variable
by clicking _mouse button 1_ on its name.  The variable name is copied
to the argument field.  By clicking the `Display' button, a new display
is created in the data window.  The data window opens automatically as
soon as you create a display.

   As a shorter alternative, you can simply press _mouse button 3_ on
the variable name and select `Display' from the popup menu.

   As an even faster alternative, you can also double-click on the
variable name.

   As another alternative, you may also enter the expression to be
displayed in the argument field and press the `Display' button.

   Finally, you may also type in a command at the debugger prompt:

     graph display EXPR [clustered] [at (X, Y)]
         [dependent on DISPLAY] [[now or] when in SCOPE]

   This command creates a new display showing the value of the
expression EXPR.  The optional parts have the following meaning:

`clustered'
     If given, the new display is created in a cluster.  Note:
     Clustering, for a discussion.

`at (X, Y)'
     If given, the new display is created at the position (X, Y).
     Otherwise, a default position is assigned.

`dependent on DISPLAY'
     If given, an edge from the display numbered or named _display_ to
     the new display is created.  Otherwise, no edge is created.  Note:
     Dependent Values, for details.

`when in SCOPE'
`now or when in SCOPE'
     If `when in' is given, the display creation is "deferred" until
     execution reaches the given SCOPE (a function name, as in the
     backtrace output).

     If `now or when in' is given, DDD first attempts to create the
     display immediately.  The display is deferred only if display
     creation fails.

     If neither `when in' suffix nor `now or when in' suffix is given,
     the display is created immediately.