Use the alphabetic wordsign when the word it represents is followed by an apostrophe with the following letters: d, ll, re, s, t, ve, provided the resulting word is standing alone.

Preferably do not use the alphabetic wordsign when it is known, or can be determined from the text, or by reference to a standard dictionary, that the letters the wordsign represents are pronounced separately as in an acronym or abbreviation.

Do not use the alphabetic wordsign for a syllable of a word shown in syllables.

Where there is more than one possible choice in the use of groupsigns, make the selection based on the following principles, unless other rules apply.

Do not use the final groupsign or wordsign in a sequence that would otherwise consist wholly of lower signs. For the purposes of this rule, any type of quotation mark which may be present is considered to have only lower dots. When a capitals indicator or a capitals terminator is present, it is disregarded in determining whether to use a lower wordsign.

Give preference to the groupsign which causes a word to occupy fewer cells.

Give preference to the strong contractions provided their use does not waste space.

Use the lower groupsign for "be", "con" or "dis" in preference to other groupsigns when the letters it represents form the first syllable of a word.

With the exception of 10.10.4 above, use the strong groupsigns in preference to the lower groupsigns.

Use the final-letter groupsign for "ence" in the letters-sequences "encea", "enced" and "encer".