FILE_SPEC is an attribute selection that specifies the name of the
    file. You identify a source file by its file name.  If it contains
    a period (.), the file name should be enclosed in quotation marks.

    The format for the FILE_SPEC attribute is as follows:

    FILE_SPEC="filename.extension"

    An example using the FILE_SPEC attribute follows:

      FIND FILE_SPEC="MYPROG.FOR"

    This query finds all occurrences in the file MYPROG.FOR.