+
+
+instructions
+------------
+
+### requirements
+[Racket](https://download.racket-lang.org/)
+
+### installation
+1. Run `make install` or `raco pkg install`
+2. Add `$HOME/.racket/7.9/bin` to your `$PATH`
+ (replacing `7.9` with whatever version you have installed)
+
+### usage
+`tt (FOLLOW-FILE)`
+
+
+notes
+-----
+
+### LWW downloads
+Downloaded timelines are stored in `~/.tt/cache/<SHA1_OF_URI>`, but no attempt
+is made to preserve the previously-downloaded messages - each download
+overrites the previous. One of the implications is that authors can edit/delete
+history without you noticing.