<cfset myfile = FileOpen("C:\cfunited_notes.txt")>
<cfloop condition="Not FileIsEOF(myfile)">
<cfset line = FileReadLine(myfile)>
this is what gets dumped.
As you can see, it gives you information like lastmodified time, mode in which the file was opened, name, path, size in bytes and status of this file object whether this is still open or closed.
This object acts very much like a struct. So you can access these data from the file object using the simple dot notation. For example, to find out the last modified time, you can use fileObj.lastmodified
That gives another useful tool in your hand. While you are writing a file incrementally, you can easily find out the size of the file written so far using fileObj.size. This will be very helpful if you want to build a logging application where log files are rotated. While you are logging the data, as soon as the file size becomes more than your certain limit, you can close the file object and start writing to a new log file.