diff --git a/license.txt b/license.txt
new file mode 100644
index 0000000..040ddc6
--- /dev/null
+++ b/license.txt
@@ -0,0 +1,5 @@
+Copyright (c) 2018, the entity known on https://ahti.space as "zgrep".
+
+Usage of the works is permitted provided that this instrument is retained with the works, so that any entity that uses the works is notified of this instrument.
+
+DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.