# File lib/cgikit.rb, line 2957
        def run
                @attr_name      = fetch( 'name' )      # String
                @attr_checked   = fetch( 'checked' )   # true or false
                @attr_value     = fetch( 'value' )     # String
                @attr_selection = fetch( 'selection' ) # String
                if ( ( @attr_value and @attr_selection ) and \
                        ( @attr_value == @attr_selection ) ) then
                        @attr_checked = true
                end

                check_required_attributes( ['selection','value'], ['checked'] )
                check_conflicted_attributes( 'selection', 'checked' )
                check_conflicted_attributes( 'value', 'checked' )
        end