farenheit2celsius error...
proc/farenheit2celsius(Q as num) Q-=32 Q*=5 Q/=9
proc/farenheit2celsius(Q as num) Q-=32 Q*=5 Q/=9 return Q
var/temp = farenheit2celsius(78)world << "The temperature is now [temp]"
Return tells the proc what to end it with.
So now you can do things like:
*EDIT*
You spelt it wrong =P. It's fahrenheit.
If I were you, I'd call the proc F2C.