In essence, any single char scalar name would do.
I started using $£ as a variable name in golf-type solutions as its the only punctuation global that isn't used for something somewhere by Perl itself, therefore it doesn't cause warnings with strict, and I don't have to localise it.
Quite why one instance of the £ character got converted during the process of posting the code, and none of the others did I am not quite sure. I even tried to correct it by cut&pasting one of the others that shows correctly (in my browser at least) over the top of the one that comes out wrong, but the results where always the same. I have no idea how to correct it.
Nah! Your thinking of Simon Templar, originally played by Roger Moore and later by Ian Ogilvy
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