document document_fragment document_fragment space member space member COMMENT TEXT element element_start_1 "<" TAG comment_or_space ATTRIBUTE_NAME "=" ATTRIBUTE_VALUE comment_or_space element_start element_start_1 ">" element_selfclosing element_start_1 SELFCLOSING ">" element element_start document_fragment element_end element_selfclosing element_end "</" END_TAG ">" TAG idchar "=" END_TAG idchar "=" SELFCLOSING "/" ATTRIBUTE_NAME idchar ATTRIBUTE_VALUE string TEXT string COMMENT comment_line multiline_comment space <\x0A > comment_or_space COMMENT space hexdigit <0-9A-Fa-f> base64digit <+/-9A-Z_a-z-> escape "\\" "x" hexdigit hexdigit < */=>\\`-begntv> idchar > /=>< escape string base64_string hex_string plain_string plain_string "`" >\\`< escape "`" hex_string "H`" space hexdigit space hexdigit space "`" base64_string "B`" space base64digit space base64digit space base64digit "=" space "`" multiline_comment "/*" >*\\< escape "*/" comment_line "//" >\x0A< "\n"