TIl In 1891, when the first Thai typewriter was developed, two lesser-used consonants were left out because they did not fit on the typewriter; this contributed to their eventual obsolescence.

https://en.wikipedia.org/wiki/Thai_typewriter#First_Thai_typewriters
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1giutw5/til_in_1891_when_the_first_thai_typewriter_was/