Generates a graph image for a PigPen query. This allows you to see what steps
will be executed when the script is run. The image is opened in another window.
This command uses a terse description for each operation.

  Example:

    (pigpen.core/show foo)

  See also: pigpen.core/show+

Generates a graph image for a PigPen query. This allows you to see what steps
will be executed when the script is run. The image is opened in another window.
This command uses a verbose description for each operation, including user code.

  Example:

    (pigpen.core/show+ foo)

  See also: pigpen.core/show