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@@ -6,6 +6,8 @@ These all work with at least [nvi](https://en.wikipedi
 Helpful documents:<br />
 - [Roman Zolotarev: Edit text with vi(1)](https://rgz.ee/vi.html)<br />
 - [Jeff W: vi help](http://www.jeffw.com/vi/vi_help.txt)<br />
+- [Maarten Litmaath: vi reference](http://www.ungerhu.com/jxh/vi.html)<br />
+- [alphanrrrd: extremely concise cheatsheet](http://www.alphanrrrd.org/vi.html)<br />
 - [ViEmu: Graphical vi cheatsheet](http://www.viemu.com/a_vi_vim_graphical_cheat_sheet_tutorial.html)
 
 #### Yank / delete an arbitrary number of lines