p. 387: The final sentence under xs:minLength should be
"If the fixed attribute has the value true, then types derived from this type are not allowed to override the value of minLength given here."
That is, change maxLength to minLength.
p. 393: Under xs:selector, "key on key reference" should be "key or key reference"
p. 405: Under xs:IDREF, "The legal lexical values of type xs:ID are exactly the same as for xs:NCName." should read
"The legal lexical values of type xs:IDREF are exactly the same as for xs:NCName."
p. 412: Under xs:unsignedInt, "2321-1" should be "232-1"