Dash, comma


Hi,   I am straggling with punctuation for 2 sentences: 1. "X companies participated in the event, out of which - Y environmental organizations". I need to emphasize that Y out of X were environmental organizations, but not sure for the dash after "out of which". 2. We are using Z - a best-in-class data analysis tool. Not sure if I need to have a dash after Z or a comma. Thank you much for your help,  Astra

dashes comma asked Nov 06 '12 at 18:59 Astra New member

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