Many thanks for that - most useful.

In answer to some specific questions:

Silly me regarding \s - these are nbsp characters embedded within a quoted string, so replacing with " " works fine.

Re @ - I'm an idiot. I did a search for the hex sequence, saw it was a @, thought to myself "oh - I thought @ was ascii, oh well", and did the replacement (why does utf bother to encode a character that exists in ascii?).

UPDATE - utf does have an alternative for @, but I've just realised that that particular sequence is a registration mark - in this case, a doctor is using it as a short-hand for 'right' in a word doc, and then pasting into a db.

And, yes, my escaping habits are terrible and I am suitably ashamed.

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2
-$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20
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