'description

'description t_desc

Adds a description for a constraint. This parameter can be specified for any constraint.

t_desc

Description to be associated with the specified constraint for use by applications.
Valid values: Any string

Some applications display this description with an error message.

orderedSpacings(
    ( minOppExtension "poly1" "metal2" (2.1 0.7) 
       'description "This is a constraint description." 
    ) 
) ;orderedSpacings