diff --git a/2021-07-01.md b/2021-07-01.md
index 9e7fdb427..29359bb93 100644
--- a/2021-07-01.md
+++ b/2021-07-01.md
@@ -1,3 +1,6 @@
-- signed up for [[kanopi]] after discussing with [[brian]], its creator
+- [[kanopi]] 
+	- signed up after discussing with [[brian]], its creator
 - [[donald bitzer]] 
-	- invented both [[plato]] and the [[plasma display]] (!)
\ No newline at end of file
+	- invented both [[plato]] and the [[plasma display]] (!)
+- [[for the love of troff]]
+	- http://www.schemamania.org/troff/for-the-love-of-troff.pdf
\ No newline at end of file