diff --git a/README b/README
index 14e70394..b46cb4e1 100644
--- a/README
+++ b/README
@@ -60,6 +60,7 @@ f = Reset font to default settign saved in config
 f+ = Increase fontsize
 f- = Decreate fontsize
 fb = Display big font size (10x20 bitmap, or size 20 with scalable).
+gNxM = make terminal NxM chars in size (if possible). e.g. g80x48 g40x20
 
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