pict: filled-rectangle: Add docstring.

* pict.scm (filled-rectangle): Add docstring.

1 files changed, 6 insertions, 0 deletions

diff --git a/pict.scm b/pict.scm
index a5f0b0b..1d4777e 100644
--- a/pict.scm
+++ b/pict.scm
@@ -751,6 +751,12 @@ and RY can be provided to round off the corners."
                            (border-width 1)
                            (rx 0)
                            (ry 0))
+  "Return a filled rectangle with width W and height H.  The keys
+BORDER-COLOR (a string) and BORDER-WIDTH (a number) are accepted to
+override the line color and line thickness, respectively.  The keys RX
+and RY can be provided to round off the corners.  The key COLOR (a
+string) controls the fill color of the rectangle; by default it is
+filled with black."
   (fill (rectangle w h
                    #:border-color border-color
                    #:border-width border-width