Iilwa script

The iilwa script is a writing system used to transcribe the Oqolaawak languages.

History
The ancestor of iilwa was the Ts'ap'u-K'ama abjad, which was adapted by the Oqolaayo to transcribe their own language around the time of Proto-Oqolaawak. At the time of adoption, almost all sounds in Proto-Oqolaawak's inventory had equivalents in Ts'ap'u-K'ama, and both languages had an exclusively open syllable structure. For the few Oqolaawak sounds absent in Ts'ap'u-K'ama ([ɬ], [e], and [o]), the Oqolaayo repurposed glyphs that would otherwise be unused: /t'/ became /hl/, /hh/ for /o/, and /q'/ for /e/.

While it is unclear whether iilwa has been adapted for languages outside of the Oqolaawak family, it has been updated rather frequently, and most words are spelled very closely to how one would expect them to be.

System
Iilwa is described by Biblaridion as "an alphabet with an inherent vowel.” Lone consonant characters are assumed to be followed by /a/ by default; a consonant glyph is followed by a dedicated vowel symbol if the vowel is not /a/, and the consonant letter is coupled with a vowel deletion diacritic if there is no vowel at all. The sound /a/ is unwritten everywhere except at the beginning of words, in which case a special character is used (this character originally represented the glottal stop, which has been lost in later dialects).

Additionally, a symbol that originally stood for /h/ now exists as a dedicated iteration marker, used for writing both long vowels and geminates. For a long vowel, one follows a normal vowel character (or a consonant letter, in the case of long /a/) with an iterator marked with the vowel deletion diacritic. For a geminate, one writes a consonant glyph, puts the vowel deleter over it, and then writes the iterator.

Numbers

 * Iilwa does not have separate characters for numbers, instead using consonant characters and preceding them with a count marker.