diff --git a/hardware/keyboard-sol/README.md b/hardware/keyboard-sol/README.md
index e4c7a5c..9a70be3 100644
--- a/hardware/keyboard-sol/README.md
+++ b/hardware/keyboard-sol/README.md
@@ -21,7 +21,9 @@ classic ASCII keyset, with a special SOL-20 add-on keyset.
between keys using straight keycaps, so an 11 degree adapter may not require
any change to the layout.
+
1. The original uses UPPERCASE+REPEAT to reset the system. For technical
reasons, this version uses CTRL+MODE_SELECT to RESET the system.
+