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 <hr/>
 <div class="footer">
-Site is powered by <a href="https://www.romanzolotarev.com/ssg.html">ssg</a> - <a href="https://git.high5.nl/why-vi.rocks/">git</a>.
+Site is powered by <a href="https://www.romanzolotarev.com/ssg.html">ssg</a> and running on [OpenBSD](https://openbsd.org) - <a href="https://git.high5.nl/why-vi.rocks/">git</a>.
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 </html>
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 A collection of commands, command sequences in [vi(1)](https://man.openbsd.org/vi.1)/[ex(1)](https://man.openbsd.org/ex.1) or with 3rd party unitilities.<br />
 These all work with at least [nvi](https://en.wikipedia.org/wiki/Nvi) 1.79 and 2.1.3 (unicode).
 
+Tutorials:<br />
+- [Roman Zolotarev: Edit text with vi(1)](https://rgz.ee/vi.html)
+
 #### Yank / delete an arbitrary number of lines
 
 	1) mark the first line: mk