On Thu, Mar 08, 2012 at 11:35:18AM +0800, Vasily Vl. Suhachev wrote:
> "infer plumbs on" not affected to vertical shot correction with loop
> closure
[snip]
> infer plumbs on
>
> 1 2 10 0 0
> 2 3 10 - down
> 3 4 10 0 0
> 4 5 20 150 0
> 5 6 10 - up
"*infer plumbs on" tells cavern to interpret gradients of +/- 90
degrees as UP/DOWN (so it will not apply the clino correction to
them)
That's from http://survex.com/docs/manual/datafile.htm, but the therion
book says much the same.
Your example has no such clino readings, so enabling this option will
have no effect.
Cheers,
Olly