<html> <form name="input" action="http://127.0.0.1:8002/grid" method="post"> xmin:<input type="text" name="XMIN" value="0"> xmax:<input type="text" name="XMAX" value="0"> ymin:<input type="text" name="YMIN" value="0"> ymax:<input type="text" name="YMAX" value="0"> <input type="hidden" name="METHOD" value="get_region_range"> <input type="submit" value="Submit" /> </form> </html>