Damn, you're right!
There is no way in hell I would have found that if I had just looked on a guess/hope for a release button/knob/cable. The cable is either broken on one end or had the (assumed) pull button ripped off. I had to wrap the loose cable around my finger and pull. But damn, it worked.
I bought that car in 1989, and in all that time I have never heard one person talk about a manual release for the C4 hatch.
I greatly appreciate it, Larry.