home.md

@@ -18,6 +18,7 @@ It is also possible to get the coordinate axes drawn.
 | z   | Zoom level      | ``-z 7``        | 
 | o   | Output file     | ``-o myimage.png``        | 
 | a   | Draw axes       | ``-a``|
+| t   | Draws a target       | ``-t target.json``|
 | d   | Disable double sided detectors       | ``-d``|
 | s   | Disable single sided detectors       | ``-s``|