& Welcome to Ludus!
& To run the code in this window, hit the RUN button.
& Ludus will evaluate this script and return its value.
& It will also perform "side effects": printing text to the screen,
& or making the "turtle" move (that's the little triangular guy).
& Lines that begin with an ampersand--&--are comments.
& Comments don't have any effect: they're for other people, not the machine.

& here's your usual first program:
print! ("Hello, world!")

& this is your first function call!
& notice a few things here:
& print! ("Hello, world!")
& ^^^^^^                  This is the function name.
&                         Not `print` but `print!`
&         ^^^^^^^^^^^^^^  This is what it prints.
&                         Note the quotation marks.
&                         Without them, Ludus would think this is code.
&        ^              ^ Between parentheses!
&                         This is a "function argument."
&                         We need parens to send an arg to a function.

& Try printing other things--
& just delete the `&` at the start of these lines:
& print! ("Well, hello there!")
& print! ("Can", "we", "print", "multiple", "strings?")

& What do you notice?