# File lib/builder/xmlmarkup.rb, line 242
242:     def instruct!(directive_tag=:xml, attrs={})
243:       _ensure_no_block ::Kernel::block_given?
244:       if directive_tag == :xml
245:         a = { :version=>"1.0", :encoding=>"UTF-8" }
246:         attrs = a.merge attrs
247:         @encoding = attrs[:encoding].downcase
248:       end
249:       _special(
250:         "<?#{directive_tag}",
251:         "?>",
252:         nil,
253:         attrs,
254:         [:version, :encoding, :standalone])
255:     end