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-rw-r--r--DOCS/tech/slave.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/DOCS/tech/slave.txt b/DOCS/tech/slave.txt
index b850b850c0..4f73a39d9a 100644
--- a/DOCS/tech/slave.txt
+++ b/DOCS/tech/slave.txt
@@ -111,6 +111,10 @@ switch_vsync [<value>]
Toggle vsync (1 == on, 0 == off). If no value is provided,
vsync status is inverted.
+switch_ratio [<value>]
+ Change aspect ratio at runtime. Value is the new aspect ratio expressed
+ as a float (e.g. 1.77778 for 16/9).
+
panscan <value> [value2]
???