def set_cursor_position(self,locator,position):
self.do_command("<STR_LIT>", [locator,position,])<EOL>
Moves the text cursor to the specified position in the given input element or textarea.
This method will fail if the specified element isn't an input element or textarea.

'locator' is an element locator pointing to an input element or textarea
'position' is the numerical position of the cursor in the field; position should be 0 to move the position to the beginning of the field.  You can also set the cursor to -1 to move it to the end of the field.