excell documents imported into program

i have a question,

i saw a game presentation the other day were the group used a excell document to hold all the charaters and there invintory, hitpoints and so on and they had it imported into their game engine and it ended up doing a few thousand lines of code for them. how is this possible?
You load Excel as a COM object and talk to it thru the COM interface.
Excel supports some easy to parse formats: csv and xml.
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