# File lib/builder/xmlmarkup.rb, line 238
238:     def instruct!(directive_tag=:xml, attrs={})
239:       _ensure_no_block block_given?
240:       if directive_tag == :xml
241:         a = { :version=>"1.0", :encoding=>"UTF-8" }
242:         attrs = a.merge attrs
243:       end
244:       _special(
245:       "<?#{directive_tag}",
246:       "?>",
247:       nil,
248:       attrs,
249:       [:version, :encoding, :standalone])
250:     end