was up when i read it, it basically says that $chr(160) will only show a hard space should the client be configured in that way. it's dependant on font for a start.
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Hard spaces
A different and perhaps more widely used approach is to replace multiple consecutive (normal) spaces with hard spaces - a hard space is basically a character that looks like a space, but isn't interpreted as a space by applications and is therefore also not affected by mIRC's way of manipulating spaces. The hard space character has ASCII code 160, and therefore commonly referred to as "$chr(160)".
The main disadvantage of $chr(160) is that this character is not universally recognized as a hard space: people using different codepages, fonts or operating systems may not see $chr(160) as a space. Additionally, when copying the text, the characters will remain hard spaces even in contexts where this may not be desired, such as dialogs, text files..
Another disadvantage of hard spaces lies in the fact that they are indeed "hard", with as result that mIRC's text display code does not see them as space, and will act differently in regard to, for example, text wrapping.
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btk