What does "I dos" phrase mean in the following two articles?

[PeaceMaker]

Hi guys,

can you please read the following articles and tell me what does "I dos" phrase mean there? Maybe I'm stupid, but I didn't figure it out..:(

First article:
http://www.cnn.com/2008/LIVING/08/08/wedding.disaster.irpt/index.html

Second article:
http://www.washingtonian.com/blogarticles/weddings/bridalparty/12653.html

thanks in advance

PM

[Skrej]

During a typical marriage ceremony, both the bride and groom are asked to make a number of vows regarding the other person. The questions take the form of "Do you, (person's name), promise to ______", and the traditional answer is "I do."

So, in the articles you cite, "I do" has been pluralized to "I dos", to represent the collection of times "I do" is said in a single ceremony.
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[PeaceMaker]

Thanks a million, Skrej! I finally understand that.