I've seen amounts written in words like 1BTC 1 BTC but not like BTC1 BTC 1 so that's easy.
I'm asking if the best place for symbol's at the beginning or end of amounts. I've seen both styles. If you're writing amounts where's the best place supposed to be BTC1.23456789 or 1.23456789BTC. Which way do you prefer using the Bitcoin symbol.
It just depends on your habits: in my language (I'm Italian) the currency symbol would go after the number, so 100 $ for example, but because of my job I mainly send emails in English so I'm more used to place the currency symbol before the number, and I realized I started doing that even when I write in Italian, I'm not even sure why or when. Anyway for me it's pretty irrelevant, every country has different rules.