Guideword

Naturalness is perhaps the best guideword to keep in mind.

Heidegger accompanies this meditation, however, with a second, more overtly "philosophical" or "thinking" reflection on the "guideword" Das Wesen der Sprache: -- die Sprache des Wesens ("The essence of language: -- the language of essence").

Secondly, the teacher-librarian must know how to use books herself to find information — title page, table of contents, index, guidewords, etc.

One purpose of a traditional memo or e-mail is to provide essential information quickly and easily, so there is no restriction, other than appearance or practicality, on the number or variety of guidewords you include.