For each table entry, a FindTagItem() will be done and if the matching tag is found in the taglist, the data in the structure will be placed into the memory pointed to by the tag's ti_Data. ti_Data *must* point to a LONGWORD.
INPUTS
pack
a pointer to the data area to be unpacked
packTable
a pointer to the packing information table. See utility/pack.h for definition and macros