Garmin Topo map of GB free-ish

[The White Rabbit]

If one were to do such an awful thing would one see hatched areas of straight lines that are not contours (someone told me they did ) and if one were to see such things what are they?

 

[Hew]

Looking at my friends copy it shows these lines as signifying woods.

 

[The White Rabbit]

Thank your friend, won't you.