[D] '19-Sep-15 ..
[ ] '19-Dec-19 Changelog
[ ] '19-Sep-15 index.html-o
[ ] '19-Oct-11 index.html-o1
[ ] '19-Oct-15 index.html-o2
[ ] '19-Dec-19 index.html-o2a
[ ] '19-Dec-19 index.html-o2b
[ ] '19-Sep-15 try-Langlands-20190915.pdf
[ ] '19-Oct-11 try-Langlands-20190926.pdf
[ ] '19-Oct-15 try-Langlands-20191015.pdf
[ ] '19-Dec-19 try-Langlands-20191219.pdf
[ ] '20-Mar-20 try-Langlands-20200320.pdf

Changes

2019-12-19:	The chapter on gaping holes is more or less complete
	now — but not optimized for reading yet.

20120-03-20:	Macros and header: synced to the main track.
Cosmetic changes.

Fixup of the beginning (Ni.St. etc.).
What knowledge of Fourier is required?

Explanation of the (invisible) cancellation of square root.

Start a section on ζ-function.
Why should we not expect deg=4 to be similar.
(D₄ is a more complicated non-distilled.)

Code to find “runs”.