Purpose - to create a reference file named "serfil" of station ids and ssns that is then read by program compgb.

The user is prompted for the filename of a Blue Book B-file. The program reads the B-file *25* record ssns and station ids. Cr8ser creates an output file named "serfil" consisting of the unique station ids and their corresponding ssns. The program retains the last ssn found for each unique station id. The output file overwrites any existing file named "serfil". No error messages are generated from cr8ser. This file is then read by program compgb to serve as a reference file of station ids and their ssns. The user enters the filename "serfil" when compgb prompts the user for the name of the station file.

The format of the "serfil" file is: cc 1- 4 four character station id

cc 5- 7 blank
cc 8-11 station serial number

Version 1.3 allows the user to specify the "serfil" output filename.