[□] □
[□=□] □
[□ | □] □
However , it has been recognised that in many applications the receiver of a message may be less interested in the identity of the sender than in whether the sender is trusted / authorised on what he requests . A second random number determines whether the card goes on the top or bottom of any cards already present in a slot . This might be modified according to the manifestation of repentance and whether the culprit was a good confessor , both as to himself and others and , in the case of slaves , to avoid-wrong-ing the owner , scourging was substituted for prison and galleys . On Thursday , Geragos quizzed Fisher about whether the science was precise enough , pointing out that one recent study suggested flaws in the DNA database . The protocols and guidelines for the joint investigation and prosecution of suspected arsons establish procedures for facilitating the exchange of information among Task Force agencies , for developing an investigative plan for each incident , and for ensuring that investigators pursue all leads and lines of inquiry , including whether the crime was motivated by race or religion and whether any one incident is connected to any other .