At 02:48 14 February 2020, Chris Behm wrote:
I'm a newbie. I've done some searching, but i can't find info on the four
numbers on the predictor heading line on my xcsoar display.
Can someone explain what the numbers are please?
Thanks in advance.


They are Detour cost markers. See section 13.6 of the manual.

It is the percentage increase of the distance if you fly to the number and
then the target compared with if you fly straight to the target from your
current location.

--
Xtophe