Editing Tibetan script (section)

===Vowel marks===

The [[vowel]]s used in the alphabet are {{bo-textonly|ཨ}} /a/, {{bo-textonly|ཨི}} /i/, {{bo-textonly|ཨུ}} /u/, {{bo-textonly|ཨེ}} /e/, and {{bo-textonly|ཨོ}} /o/. While the vowel /a/ is included in each consonant, the other vowels are indicated by marks; thus  {{bo-textonly|ཀ}} /ka/, {{bo-textonly|ཀི}} /ki/, {{bo-textonly|ཀུ}} /ku/, {{bo-textonly|ཀེ}} /ke/, {{bo-textonly|ཀོ}} /ko/.  The vowels {{bo-textonly|ཨི}} /i/, {{bo-textonly|ཨེ}} /e/, and {{bo-textonly|ཨོ}} /o/ are placed above consonants as diacritics, while the vowel {{bo-textonly|ཨུ}} /u/ is placed underneath consonants.<ref name="daniels" /> [[Old Tibetan]] included a reversed form of the mark for /i/, the gigu 'verso', of uncertain meaning. There is no distinction between long and short vowels in written Tibetan, except in [[loanword]]s, especially transcribed from the [[Sanskrit]].

{| class="wikitable"
|- style="text-align:center;"
!Vowel mark
!IPA
!Vowel mark
!IPA
!Vowel mark
!IPA
!Vowel mark
!IPA
|- style="text-align:center;"
|{{bo-textonly|ི}} || {{IPA|/i/}} || {{bo-textonly|ུ}} || {{IPA|/u/}} || {{bo-textonly|ེ}} || {{IPA|/e/}} || {{bo-textonly|ོ}} || {{IPA|/o/}}
|}