I do know it and I have used it a few times. If you are going to be using a lot of symbols from there, the map really comes in handy. I have never used the font selection to pick symbol, I would have to try it to know the difference even if from your description it sounds a little roundabout.
The issue with working with Windows is it's language based, so if you want to use an 'E' with an accent or acute, it would be near impossible unless you could copy or paste one. The character map makes it possible to find lots of characterisations from other languages quickly and in the same font as you're using without taking all day about it.
As far as the other symbols are concerned, it's good for them too. Much quicker than trying to find stuff by iterating through key strokes.
What do you think is the future for PCs with Operating Systems such as Windows and IOs ?Some years ago, I got a little question about what is Microsoft trying to get with its OS. Well I guess they want to reduce the...