diff --git a/compiler.go b/compiler.go
index cbe0a99c..967b0a05 100644
--- a/compiler.go
+++ b/compiler.go
@@ -63,6 +63,9 @@ type srcMapItem struct {
 	srcPos int
 }
 
+// Program is an internal, compiled representation of code which is produced by the Compile function.
+// This representation is not linked to a runtime in any way and can be used concurrently.
+// It is always preferable to use a Program over a string when running code as it skips the compilation step.
 type Program struct {
 	code   []instruction
 	values []Value