Simplify the following text for a Grade 6 native English-speaking person.
Original: In 1912 Ambrose Bierce proposed `` an improvement in punctuation â '' the snigger point , or note of cachinnation : it is written thus ___ \/ !
Simplified: In 1912 , Ambrose Bierce created something called a `` snigger point '' . `` It is written thus ___ \/ !