This is perhaps a silly question, local/but I didn't see how to do it
in the manual.

Given the following code:

    num = 100
    numbers = [str(i) for i in xrange(num) ]
    numbers = "\n".join(numbers)

    t = urwid.Text(numbers)
    f = urwid.Filler(t)

    loop = urwid.MainLoop(f)
    loop.run()

If I run the above on a 80x24 terminal (that is, 80 columns, 24 lines)
and num < 24, we are good.

If num is > 24 or any size greater than the number of rows, the text
will be clipped.

Now here is the behavior I am after, I want to display the bottom half
of the text, not the top half. For the above code, this is what I see:

0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

That's the top portion of text box, fitted within the contents of the
screen, but I want to display something like this:

76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

What is the canonical way to do this? I understand of course that I
can calculate the number of rows and then clip the text myself. I
wanted to see if there was some parameter to Text/Fill that would do
this for me?

Thank you.

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