Added MakeCirc reference and link to Circ.asy's initial comment.

diff --git a/asymptote/Circ.asy b/asymptote/Circ.asy
index abfe42430dcd028dee02267c7df800307e400314..b9d26e5da6d686a71bd3b3f99c74f678a126851b 100644 (file)
--- a/asymptote/Circ.asy
+++ b/asymptote/Circ.asy
@@ -17,6 +17,10 @@
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *
+ * Based on MetaPost's MakeCirc by Gustavo Sebastian Bustamante Argañaraz.
+ *   http://www.ctan.org/tex-archive/help/Catalogue/entries/makecirc.html
  */
 
 // Command definitions for easier labeling