Editing Khmer script (section)

== Unicode ==

The basic [[Khmer (Unicode block)|Khmer block]] was added to the [[Unicode]] Standard in version 3.0, released in September 1999. It then contained 103 defined code points; this was extended to 114 in version 4.0, released in April 2003. Version 4.0 also introduced an additional block, called [[Khmer Symbols]], containing 32 signs used for writing [[lunar calendar|lunar dates]].

The Unicode block for basic Khmer characters is U+1780–U+17FF:
{{Unicode chart Khmer}}

The first 35 characters are the [[#Consonants|consonant letter]]s (including two obsolete). The symbols at U+17A3 and U+17A4 are deprecated (they were intended for use in Pali and Sanskrit transliteration, but are identical in appearance to the consonant {{lang|km|អ}}, written alone or with the ''a'' vowel). These are followed by the 15 [[#Independent vowels|independent vowels]] (including one obsolete and one variant form). The code points U+17B4 and U+17B5 are invisible combining marks for inherent vowels, intended for use only in special applications.

Next come the 16 [[#Dependent vowels|dependent vowel signs]] and the 12 [[#Diacritics|diacritics]] (excluding the ''kbiĕh kraôm'', which is identical in form to the ''ŏ'' dependent vowel); these are represented together with a dotted circle, but should be displayed appropriately in combination with a preceding Khmer letter.

The code point U+17D2, called {{lang|km|ជើង}} ''{{transliteration|km|ceung}}'', meaning "foot", is used to indicate that a following consonant is to be written in subscript form. It is not normally visibly rendered as a character. U+17D3 was originally intended for use in writing lunar dates, but its use is now discouraged (see the Khmer Symbols block hereafter). The next seven characters are the [[#Spacing and punctuation|punctuation marks]] listed hereinbefore; these are followed by the [[Cambodian riel|riel]] currency symbol, a rare sign corresponding to the Sanskrit [[avagraha]], and a mostly obsolete version of the ''vĭréam'' diacritic. The U+17Ex series contains the [[#Numerals|Khmer numerals]], and the U+17Fx series contains variants of the numerals used in [[divination]] lore.

The block with additional lunar date symbols is U+19E0–U+19FF:
{{Unicode chart Khmer Symbols}}

The symbols at U+19E0 and U+19F0 represent the first and second "eighth month" in a lunar year containing a leap-month (see [[Khmer calendar]]). The remaining symbols in this block denote the days of a lunar month: those in the U+19Ex series for waxing days, and those in the U+19Fx series for waning days.