// types
int
double
string
triangle
pixmap
circle
rectangle
textbox

// keywords
forward
initialization
on
animation
if
for
else
exit
print
true
false

// event keys
space
leftarrow
rightarrow
uparrow
downarrow
leftmouse_down
middlemouse_down
rightmouse_down
leftmouse_up
middlemouse_up
rightmouse_up
mouse_move
mouse_drag
f1
akey
skey
dkey
fkey
hkey
jkey
kkey
lkey
wkey

// punctuation
( 
) 
{ 
} 
[
]
; 
, 
. 

// assignment operators 
// unlike C/C++/Java, assignment operators are NOT part of expressions
// thus they don't need to be assigned a precedence level
=
+= 
-= 

// unary operators with textual names
// these "fake" functions are in the grammar in such a way
// that they do not need to be assigned a precedence level
sin 
cos
tan
asin 
acos
atan
sqrt
abs
floor
random

// graphical operators
// these binary operators are in the grammar in such a way that 
// they don't need a precedence level 
touches
near


// mathematical operators
* 
/ 
+ 
- 
% 


// logical operators
< 
> 
<= 
>= 
== 
!= 
!
&& 
||