Looks like one of the example lines was missing.
@ -20,6 +20,9 @@
// Example: foo can hold 8 bits (0 to 255)
// bar can hold 16 bits (0 to 65,535)
//
// const foo: u8 = 20;
// var bar: u16 = 2000;
// You can do just about any combination of these that you can think of:
// u32 can hold 0 to 4,294,967,295