ciation of a source file and a line number to an address and length in a program (the
    "source file map"). We use the word "transform" when discussing user-determined modifications
    of a source file's path.</P>

    <P>There are two type of source path transforms:</P>

    <BLOCKQUOTE>
      <OL>
        <LI><I>File Transforms</I>, which entirely replace a source file's path with another file
        path.</LI>

        <LI><I>Directory Transforms</I>, which replace a parent directory of a source file