Two redundant word thingies.

[pjdevries]

The first correction removes the "of" from the phrase "or contain of exactly one", simply because it does not belong there.

The second correction removes the words "each one" from the phrase "each one rendered as tabs", because they are not only redundant, but also mixes a singular "one" with multiple "tabs".

[nikosdion]

You are an amazing proof-reader! Thank you :)