I need help with hp7470a plotter

Hello all
I have a hp7470a plotter and it pass all the test when i start it.
I am trying to wire a new cable 25-pin to 9-pin and i dit what they
show in this link :
http://www.hp.com/cposupport/plotters/support_doc/bpp01379.html
I have a question to where to conect the pin #6 from the 25-pin to
9-pin conector,the info show #6-pin from plotter data set redy to |
look like this :data set redy 6--| ,what this means ??
Also the #8 pin from the 9-pin conector show the same
: |--8 clear to send
Where should i conect this two wires ?????
Thanks
Papas