docs: Refer to calibration matrix

diff --git a/docs/labwc-config.5.scd b/docs/labwc-config.5.scd
index c163bafbb2fc7980f548056901311caa3397cd62..c7bfaf4cd52feb38f304b960f0ded8219c25f127 100644 (file)
--- a/docs/labwc-config.5.scd
+++ b/docs/labwc-config.5.scd
@@ -596,6 +596,9 @@ extending outward from the snapped edge.
        no rotation (0). Rotation will be applied after applying tablet area
        transformation.
 
+       See also *calibrationMatrix* in libinput section below for advanced
+       transformation.
+
 *<tablet><area top="mm" left="mm" width="mm" height="mm" />*
        By default the complete tablet area is mapped to the full output.
        The *area* element can be used to truncate the active area of the