Good Morning Sprinkles. xx

Fridays riddle answer was - Name.
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Yesterdays again in case you missed it.

If you remove my skin, I won’t cry. But, you might. What am I?
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Todays is:-

Some have flown over land and sea,
To plot where things are to create me,
Filled with squares either green or blue,
If you need to know where to go, I'm true
Through me you can see every hill and fen,
So tell me, what am I, then?

All answers on my back wall please. xx

xxxx