It doesn't appear as a feature. If you want to trace the approximate line a watershed, 1) decide what it's the watershed between (eg streams flowing to the English Channel versus those flowing to the Bristol Channel; 2) mark the headwaters of one category in one way and the headwaters of the other category in another; and then 3) draw a line that passes between the two types of headwater. The line won't cross any streams and will be very wavy! Hope this helps. Richard
what does a bridge look like on a map
They would look on the Map's key and the compass rose.
Milestone
A plus sign on an OS map signifies a church without a spire or tower.
layer shading on an OS map, is shown by using different colors to represent height on the map. Usually darker the color the taller the piece of land is. Although you could use different colors for E.G blue could could show that the land is high and green could show very low land.
what does a bridge look like on a map
They would look on the Map's key and the compass rose.
You can download a theme to make Vista look more like OS X. It won't run OS X applications, though.
Operating System (In the context of an actual map, OS stands for Ordnance Survey, the national mapping agency for Great Britain.)
On an OS map, it's a Public House
it means boo boo
Milestone
Post Office
Place of Worship
a red line
red is a road and the blocks are little houses
In the United Kingdom, a Government body, The Ordnance Survey (OS), surveys and prints maps of the UK at various scales.