Font dimensions

[Scott Hofmann <ho...@one.net>]

I'm trying to understand how text is dimensioned vertically. If I put text
into a fo:block I notice space occurring before and after the text in
addition to the height of the font itself. How do I figure out how much
space is placed above and below the font so I can come up with a total
amount of space that will be used vertically in a particular fo:block?

space above the letter + the letter height + the space below the letter  = ?
Is there a way to calculate this? Does the space above and below vary
proportionately to the font size specified for the letter?

Can someone point me in the right direction with a link or an explanation?

Scott Hofmann - hofmanns@one.net


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