Thanks, Greg.

Yes, I wanted to jump to the mark with C-u C-SPC.

Thanks

Ypo,

fwiw, [C-h k C-SPC] has a paragraph that says
----
With prefix argument (e.g., C-u C-SPC), jump to the mark, and set the mark from
position popped off the local mark ring (this does not affect the global
mark ring).  Use C-x C-@ to jump to a mark popped off the global
mark ring (see ‘pop-global-mark’).
----

i don't know if that helps at all.

cheers, Greg