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["El.Douwen" <address@hidden>]

hi
i had asked for the writing of AB and Marc suggested to write A[space]B so 
that the italic of A be the same than i the other parts of the document.
for the little letters i have always written a*b and the * is invisible. 
Typing a space b gives the same result but is quite shorter and easier to do
is there a typographic reason to prefer the use of * than the use of space or 
is it ok ?
Sacha