diff --git a/cpdfmanual.pdf b/cpdfmanual.pdf
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diff --git a/cpdfmanual.tex b/cpdfmanual.tex
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--- a/cpdfmanual.tex
+++ b/cpdfmanual.tex
@@ -4371,7 +4371,7 @@ Lines may have dash patterns. A dash pattern consists of one or more numbers. Al
    \noindent\verb!-pop! Pop graphics stack\\
    \noindent\verb!-matrix "a b c d e f"! Append to graphics matrix\\
    \noindent\verb!-mtrans "tx ty"! Translate the graphics matrix\\
-   \noindent\verb!-mrot "x y a"! Rotate the graphics matrix counterclockwise around \texttt{(x, y)} by angle \texttt{a}\\
+   \noindent\verb!-mrot "x y a"! Rotate the graphics matrix counterclockwise around \texttt{(x, y)} by angle \texttt{a} in radians\\
    \noindent\verb!-mscale "x y sx sy"! Scale the graphics matrix around \texttt{(x, y)}\\
    \noindent\verb!-mshearx "x y a"! Shear the graphics matrix in X around \texttt{(x, y)} by angle \texttt{a}\\
    \noindent\verb!-msheary "x y a"! Shear the graphics matrix in Y around \texttt{(x, y)} by angle \texttt{a}