diff --git a/content/reference.gmi b/content/reference.gmi
index b1d9ea9..f172d71 100644
--- a/content/reference.gmi
+++ b/content/reference.gmi
@@ -7,10 +7,17 @@
 => html://landchad.net                          Setting up a Gemini server [www]
 => https://cadelwatson.com/blog/germinate/      Building a Gemini browser [www]
 
-# otherwise fun
+# computers
 
 => gemini://drewdevault.com/2021/10/05/Terminal-emulation-legacy.gmi                        Terminal emulation legacy
 => https://ploum.net/the-computer-built-to-last-50-years                                    The computer built to last 50 years [www]
 => https://jlouisramblings.blogspot.com/2012/08/getting-25-megalines-of-code-to-behave.html The softare of the Curiosity Mars rover [www]
+
+# vim
+
+=> https://vim.fandom.com/wiki/Entering_special_characters  Entering special characters in Vim [www]
+
+# otherwise fun
+
 => gemini://drewdevault.com/2021/12/23/Sustainable-creativity-post-copyright.gmi            Sustainable creativity post copyright