SWI-Prolog -- put_attrs/2

Documentation
- Reference manual
  - Constraint Logic Programming
    - Attributed variables
      - Special purpose predicates for attributes
        
        get_attrs/2
        
        put_attrs/2
        
        del_attrs/1
- Packages

Availability:built-in

put_attrs(+Var, -Attributes)

Set all attributes of Var. See get_attrs/2 for a description of Attributes.