Set variables to inputs

docs/syntax.md

@@ -9,6 +9,8 @@ Creates the variable "var" with a set number of bytes allocated to it, and initi
 
 Example: `create var bool 1 true`
 
+To set a variable to an input byte, use: `create var string 1 i[idx]`.
+
 ## print var
 
 Prints the value of `var` to the console, where `var` is a variable.