It looks pretty good. My acid test for any book on the subject is to 
read the section on [pack], and if I don't come out more confused than 
when I started, it is okay. TatTT2 has the clearest explanation of 
[pack] I have seen yet, and I look forward to having time to read more.
Gerry
I would adjust the acid test to reading the section on [grid] and
seeing whether it convinces you that it is the best general geometry
manager, even if more verbose.  Because that's what it is but it isn't
as easy as pack.  ;)
Jeff
Jeff,
Actually, I did glance over the writeup of [grid] in the new book, and 
it did do a pretty good job of convincing me.
I really intended to write about the book, rather than about my 
deficiencies as a Tk programmer, but I will admit that me early reading 
about [grid] made me think it was (mostly) intended for even rectangular 
arrays of things, and not for general layouts. And so I used [pack] for 
almost everything. I realize now I misunderstood.
One of these long winter evenings I intend to recode one of my windows 
that currently has [pack]ed nested [frame]s using [grid], and see how I 
like the looks of the code and of the window.
I expect that will make me a convert. Especially if I remember how much 
trouble it was to add another nested frame when redesigning the window.
Gerry
Yup, gonna get me that one!