Storage of a regular expression that specifies a filename pattern. Used to group files based on custom filenames. The importer to use: LSM, DV, PIC, STK, etc. The regular expression to use to compare against filenames. A name for this pattern. The position of the base name in the regular expression. The position of the the Z in the regular expression. The position of the the T in the regular expression. The position of the the C in the regular expression.