red without structure, no scanner is generated.
Tokens are assigned numbers in the order of their declaration; i.e., the
first token gets the number 1, the second the number 2, etc. The number
0 is reserved for the end-of-file symbol. The hand-written scanner has
to return token numbers according to this convention. It must have the
interface described in Section 3.3.</P>

<H3>Tailoring the generated compiler parts to specific needs</H3>

<P>Using a generator usually increases productivity but decreases fle