There should always be one primary accent (') per entry, even if the
whole word consists of only one syllable. This is to
allow a distinction between words and non-words, as slips of the tongue
and truncated words do not receive any accent
markers.
For the allocation of primary accents the DUDENis again the most reliable reference.
Secondary accents ('') are not indicated in the DUDEN, though. They
occur mainly in phrases, compounds and prefix verbs.
Example: Aimee-und-Jaguar QEm''e:Untj'a:gua:r ''Offnungszeiten Q'9fnUNsts''aIt@n abbuchen Q'apb''u:x@n
Example: Rechnungswesenabschlu"spr"ufung
r'ECnUNsv"e:z@nQ'apSlUspr"y:fUN