58. The data collection system of claim 41 , wherein the computer is configured to display a tree diagram displaying indicators of said first and second files, and wherein said computer is further configured to display at least one of a compression selection designator and encryption selection designator in said tree diagram, and wherein said computer is configured to compress and/or encrypt file data of said single data package in accordance with the position of said compression and/or encryption selection data indicated represented in said tree diagram.
58. The data collection system of claim 41 , wherein the computer is configured to display a tree diagram displaying indicators of said first and second files, and wherein said computer is further configured to display at least one of a compression selection designator and encryption selection designator in said tree diagram, and wherein said computer is configured to compress and/or encrypt file data of said single data package in accordance with the position of said compression and/or encryption selection data indicated represented in said tree diagram. 63. The data collection system of claim 58 , wherein the single data package is further provided with an indication that the data collection terminal should only process the single data package if certain data of said single data package is successfully decrypted.