Potential CSVN 2D Map Mod

[Sean]

Thank you.

(1)
How do the heights in the bmp work.
There is 6 rows across and lots of rows (50maybe ) down.
Is each 25 metre height a row down starting at top for 0m and down to bottom for 1250m?
And each row across just adds a little variation to picture for set height for that row?