The aliases in this block represent the Jamo short names (Latin letters using the romanisation of Hangul).
Modern leading consonants (choseong) – 19 characters:
Each one of these modern jamos used in modern Korean may be precomposed and encoded with one modern medial or final vowel (in the following 19 jungseong jamo) and at most one modern final consonant (in the following 27 modern jungseong jamos) into a single canonically equivalent character in the Unicode AC00-D7AF Hangul Syllables block, containing all characters needed for modern Hangul syllables, using a standard arithmetic rule; more complex Hangul syllables for old Korean may still be composed and encoded, by prepending the precomposed syllable with zero or more (modern or old) leading consonants, and/or by appending zero or more (modern or old) medial or final vowels followed by zero or more (modern or old) final consonants.
They should be rendered in the upper part of a composed Hangul syllable.
ᄀᄁᄂᄃᄄᄅᄆᄇᄈᄉᄊᄋᄌᄍᄎᄏ ᄐᄑᄒ
Old initial consonants – 77 characters:
These old jamos cannot be precomposed with any other jamos into a single character. However they may be composed graphically into a single Hangul syllable with advanced fonts.
The last character in this range is not really an initial consonant, but a format control (a Hangul choseong filler), and used to block the composition of a leading consonant encoded before it with a precomposed Hangul syllable or another leading consonant into the same Hangul syllable. It is normally not needed in standard modern Korean texts; but it may occur only after a leading consonant (where it plays the role of an explicit syllable separator) or before a medial vowel (where it plays the role of a null consonant part of an old Hangul syllable, to mean that the vowel following is in fact initial the syllable), otherwise it may eventually render as a special “HCF” spacing symbol (meaning that it is superfluous or to visually mark its presence when editing Korean texts).
They should be rendered in the upper part of a composed Hangul syllable.
The first character in this range is not really a vowel, but a format control (a Hangul jungseong filler) playing the role of a missing (or null) vowel, allowing the composition of a leading consonant encoded before it and a final consonant encoded after it into the same Hangul syllable (where the second one will be rendered below the first one). It is normally not needed in standard modern Korean texts; but it may occur between consonants and before a final consonant, to stack them vertically in the same composed syllable (instead of composing them in separate syllables), otherwise it may eventually render as a special “HJF” spacing symbol (meaning that it is superfluous or to visually mark its presence when editing Korean texts).
The 21 other vowels may also be encoded with a leading modern leading consonant into a canonical equivalent Hangul syllable character, using a standard arithmetic rule.
They should be rendered in the upper part of a composed Hangul syllable, and to the right and/or below the leading consonant (whose visual size may be reduced).
ᅠᅡᅢᅣᅤᅥᅦᅧᅨᅩᅪᅫᅬᅭᅮᅯ ᅰᅱᅲᅳᅴᅵ
Old medial vowels – 50 characters:
These old jamos cannot be precomposed with any other jamos into a single character. However they may be composed graphically into a single Hangul syllable with advanced fonts, unless such composition is blocked by an Hangul consonant filler encoded between them.
They should be rendered in the upper part of a composed Hangul syllable, and to the right and/or below the leading consonant (whose visual size may be reduced).
Modern final consonants (jongseong) – 27 characters:
They should be rendered in the lower part of a composed Hangul syllable.
ᆨᆩᆪᆫᆬᆭᆮᆯ ᆰᆱᆲᆳᆴᆵᆶᆷᆸᆹᆺᆻᆼᆽᆾᆿ ᇀᇁᇂ
Old final consonants – 61 characters:
These old jamos cannot be precomposed with any other jamos into a single character. However they may be composed graphically into a single Hangul syllable with advanced fonts, unless such composition is blocked by an Hangul consonant filler encoded between them.
They should be rendered in the lower part of a composed Hangul syllable.