🚀 go-pugleaf

I am presently trying to modify a program for the C64 to copy files
from the disk to tape instead of disk to disk.  I am to the point
of getting the files off the disk and kind of on the tape.  It can
find the name of the first program on tape and appears to begin to 
load it.  However, it just keeps loading past the end of that 
program and on into any others that were supposedly saved.  It
can't seem to be able to determine the end of a program.  I use
OPEN 2,1,2,"FILE NAME" and then call the CHROUT kernal routine to
write the characters to the tape.  I think I'm missing a special
set of characters that indicates the end of a program.  Do any of
you out there have a description of the tape program file format
or any kind of information on special characters or sequences of 
characters that are used as tape controllers?  Also, how might I go
about finding these things from programs already stored on tape?

Thanks in advance.

Mike Nelson
AT&T Bell Labs
ihuxf!cuda