Abstract: Index entries may be generated for incoming items of information and may include timestamps associated with an identification of the relevant item. Timestamps may be reassigned in response to user commands or according to preconfigured instructions. Items may be output, visually or aurally, according to their associated timestamps. Items may be clustered together according to user commands or preconfigured instructions. Timestamp reassignment and clustering may be configured according to information relevant to corresponding items or information which is not directly relevant to the items themselves.