When a file is qualified, its record names must be qualified everywhere
in the source except when specified as parameters of the File specification
keywords RENAME, INCLUDE, IGNORE, and SFILE. The name must not be
qualified when specified as the parameter of those keywords.
When a file is qualified, Input and Output specifications are
not allowed or generated for the file. This means that external fields
from the file are not automatically defined as fields in the program.
All I/O must be done with result data structures.
The QUALIFIED keyword is valid only for externally-described files.
The QUALIFIED keyword cannot be specified with the LIKEFILE keyword;
files defined with LIKEFILE always have qualified record formats.