[Zope] zope book AppendixA error

[Didier Georgieff]

Hello,
I guess DC people is already aware, but i get an error since 
yesterday while pointing to ZB/AppendixA.html

Document Template Parse Error

             invalid parameter: "="Expression"]...", for tag <dtml-let 
[Name=Variable][Name="Expression"]...>, on line 421 of 
AppendixA.html

Didier.