[tex-k] Suggestions about exercises 22.10 and 21.10 in TeXbook

[Igor Liferenko]

Hi, all

1)

According to definition of preamble on p.235,
\cr is part of preamble. So, in exercise
22.10 the text

    \halign{<preamble>\cr

should be changed to

    \halign{<preamble>

This agrees with the answer, where \cr is used.

In current state, after substituting the answer,
the code will contain \cr\cr.

2)

This is the answer to exercise 21.10:

    {\let\the=0\edef\next{\write\cont{<token list>}}\next} will
    expand everything but \the when the \write command is given.

Although I understand the idea, the wording seems not apt.
I understand this something as this:

    \write will be executed after \edef expands everything
    except \the.

But maybe I misunderstand something.

Regards,
Igor