Question on the Nissan microfiche column headers

[foosman]

Searched through the posts for the answer to this question - apologies in advance if it's been answered before.  I'm looking through my copy of the club microfiche, and the typical page has a couple of column headings I'm trying to decipher.  The first column is headed with "S", and there is an "ICA" column, with "N" and "F" sub-columns.  What do these columns indicate?

Thanks - btw, I highly recommend the club microfiche, Mike did a nice job with the scans.  The web browsing doesn't work with my 15+ year old CD copy, at least on my MacBook Pro, but the PDF files are easy enough to browse without it.

[CanTechZ]

The ICA column refers to parts interchangeability, the attached pages from the 1970 520/521 pickup 1970 parts book show definitions of all the columns.

HTH Mike

Edited August 24, 2017 by CanTechZ

[foosman]

Thanks Mike!