The defined-from string may have any of three different formats, depending on which of the three compiling functions compiled it:
The filename is the namestring of the truename of the file the function was defined from. The time is the file-write-date of the file.
The time is the time that the function was compiled. Machine is the machine-instance of the machine on which the compilation was done.
Stream is the printed representation of the stream compiled from. The time is the time the compilation started.
An example of the format of user-time is 6-May-86 1:04:44. The universal-time is the same time represented as a decimal integer. It should be noted that in each case, the universal time is the last thing in the string.