That should about wrap it up.

[Flyby]

I can not understand this sentence which I found in the English book for listening.

This is the script of my English book. ( In this script, two students are talking about their presentation for next class)


< W: Then... when you're through with the slides, we should probably allow enough time for questions .
M: Yeah, that sounds good. That should about wrap it up.
See? we're all set to go. >

And i wonder "about" ,which is in that sentence, is preposition or adverb.

[Soup]

Yes. It's close in meaning to nearly; almost.