diff --git a/README.md b/README.md
index 36e7e7a..b50c9a0 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,8 @@ go install opslag.de/schobers/tins2020/cmd/tins2020 -tags static,allegro -ldflag
 ```
 In this case the SDL 2.0 prerequisite is replaced by the Allegro 5.2 (development libraries must be available for your C compiler).
 
+## Command line interface
+You can extract all resources embedded in the executable by running it from the command line with the `--extract-resources` flag. The resources will be extract in the current working directory. Note that the game will use the resources on disk first if they are available.
 
 ## Sources
 Can be found at https://opslag.de/schobers/tins2020 (Git repository).