They are alluding to IDA's recursive disassembly capabilities. http://reverseengineering.stackexchange.com/questions/2347/what-is-the-algorithm-used-in-recursi

They are alluding to IDA's recursive disassembly capabilities. http://reverseengineering.stackexchange.com/questions/2347/what-is-the-algorithm-used-in-recursive-traversal-disassembly http://reverseengineering.stackexchange.com/questions/2347/w... (It's worth noting the answer from Igor Skochinsky, while not the selected answer, comes from IDA's author.)