Jean-Marc Lasgouttes wrote: > You can take the width of the 'm' letter, which was the original > definition.
'M' (capital), for that matter. However, this never was the original definition. The original definition refers to the height of the body (the metal block of the letter). > I read somewhere it is not really true, but it might be > good enough. for a start: http://en.wikipedia.org/wiki/Em_(typography) Jürgen