[twenty-years] Stale notes

[Federico Mena Quintero <federico src gnome org>]

commit e957c2eeeb13302783ea65df064fa0ff5706281e
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Apr 28 17:39:53 2020 -0500

    Stale notes

 notes.txt | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/notes.txt b/notes.txt
index 276bf0d..0221e91 100644
--- a/notes.txt
+++ b/notes.txt
@@ -134,3 +134,7 @@ http://mirror.hmc.edu/ctan/macros/latex/contrib/listings/listings.pdf
 ** Install package texlive-biber - Replacement for bibtex(1)
 
 ** Typesetting source code https://www.ctan.org/pkg/listings
+
+** https://en.wikibooks.org/wiki/LaTeX/Errors_and_Warnings#Underfull_hbox
+
+** Make documents look better: https://twitter.com/katrielalex/status/984373545248706560