Docs: Better documentation of the tags used during publishing

doc/org.texi

@@ -8341,9 +8341,10 @@ keywords and tags lead to conflicts, use the variables
 parts of the document - your style specifications may change these, in
 addition to any of the standard classes like for headlines, tables etc.
 @example
+p.author           @r{author information, including email}
+p.date             @r{publishing date}
+p.creator          @r{creator info, about Org-mode version}
 .title             @r{document title}
-.author            @r{author information}
-.date              @r{publishing date}
 .todo              @r{TODO keywords, all not-done states}
 .done              @r{the DONE keywords, all stated the count as done}
 .WAITING           @r{each TODO keyword also uses a class named after itself}
@@ -8354,17 +8355,17 @@ addition to any of the standard classes like for headlines, tables etc.
 .target            @r{target for links}
 .linenr            @r{the line number in a code example}
 .code-highlighted  @r{for highlighting referenced code lines}
-.section-number-N  @r{section number in headlines, different for each level}
-.footnotes         @r{footnote section headline}
-.footref           @r{a footnote reference (also a <sup>)}
-.footnote          @r{footnote definition paragraph}
-.footnum           @r{footnote number in footnote definition (also <sup>)}
-div.figure         @r{how to format an inlined image}
 div.outline-N      @r{div for outline level N (headline plus text))}
 div.outline-text-N @r{extra div for text at outline level N}
+.section-number-N  @r{section number in headlines, different for each level}
+div.figure         @r{how to format an inlined image}
 pre.src            @r{formatted source code}
 pre.example        @r{normal example}
 p.verse            @r{verse paragraph}
+div.footnotes      @r{footnote section headline}
+p.footnote         @r{footnote definition paragraph, containing a footnote}
+.footref           @r{a footnote reference number (always a <sup>)}
+.footnum           @r{footnote number in footnote definition (always <sup>)}
 @end example
 
 @vindex org-export-html-style-default

lisp/org-exp.el

@@ -3983,7 +3983,7 @@ lang=\"%s\" xml:lang=\"%s\">
 		    (nth 2 lang-words) ": "
 		    date "</p>\n"))
 	  (when org-export-creator-info
-	    (insert (format "<p>HTML generated by org-mode %s in emacs %s</p>\n"
+	    (insert (format "<p class=\"creator\">HTML generated by org-mode %s in emacs %s</p>\n"
 			    org-version emacs-major-version)))
 	  (insert "</div>"))