What is the term for "blotted" censored FBI documents?

Question

I am in a Multimedia class, and the instructor has asked us to find out what the term for blacked out blotted censoring on things like FBI documents is. He says the word he is looking for starts with the letter "R" An example is on the second page of this document:

http://foia.fbi.gov/short_e/short_e_part01.pdf

Answer 1

Redacted. The inforamation has been redacted.