As @sawa answered earlier, it means "like this" or "in this way".

For future reference, 〜通り can be used with many things:

• 教科書{きょうかしょ}通り → by the book
• 憲法{けんぽう}通り → by the constitution
• 規則{きそく}通り → by the rules

As @sawa answered earlier, it means "like this" or "in this way".

For future reference, 〜通り{どおり} can also be used in many places:

• 教科書通り{きょうかしょどおり} → by the book
• 憲法通り{けんぽうどおり} → by the constitution
• 規則通り{きそくどおり} → by the rules