3. The method of claim 2 , wherein the relationship definition records a relationship between the main file and the related file separately from the main file and the related file, and wherein the relationship definition is to facilitate associating the information stored in the related file to the main file without altering the information contained in the main file.
2. The method of claim 1 , wherein the portion of the main file name includes a first substring and a second substring, and wherein accessing the related file further comprises identifying a related file name that corresponds to the related file included in the package by: matching the first substring of the main file name to a first pattern string of the at least one relationship definition; substituting the second substring of the main file name into the first pattern string; and deriving the related file name by adding the first pattern string with the substituted second string of the main file name to the portion of the template string.