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+The file `.vimrc` in your home directory has instructions for [[vim]] to load every time 
+it runs. Customizations go there.
+
+For instance, you might want to use [[Markdown]] to edit files that end in `.md`. The system
+default for some reason is to treat these as [[Modula-2]] files, though we don't have
+a Modula-2 compiler running (yet).  So the contents of `.vimrc` should read
+
+``
+au BufRead,BufNewFile *.md set filetype=markdown
+``
+
+For more suggestions in deep depth on how to set up your `.vimrc` please read
+[this tutorial from Doug Black](http://dougblack.io/words/a-good-vimrc.html).
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