Specification for Base Materials for High Speed/High Frequency Applications Amendment 1 generates a formalized record, for document control purposes, of corrections to ten separate sections in the main body of the standard; to the first 16 "legacy" specification sheets (IPC-4103/1 through IPC-4103/16); and to the 10 "new format" specification sheets for bonding layer materials (IPC-4103/500 through IPC-4103/590).