I've been editing out things like
assalaamu 3alaykum wa ra7matullahi wa barakaatuh
thinking that they're some mobile phone quirk, and have nothing to do with Arabic or Islam.
I'm wondering numbers like these come about. In Chinese, we sometimes use numbers to indicate the tone, and I'm wondering if there's something along those lines in Arabic.
Question: What's up with "3alaykum"?