Syntax query for racadm

Hi,

In the following Dell paper, there is an entry for destaddr %4

Can someone pls explain what that %4 is referring to (and what %1, %2, %3 might refer to also)?

What destaddr is being loaded?

http://en.community.dell.com/techcenter/extras/m/white_papers/20438657

Thx

John Bradshaw