tflags userconf

[Charles Gregory]

Hallo!

Back on topic.... :)
I happened to notice that 'tflags userconf' was specified for a few tests 
that, as far as I could tell have on user configurable parameters.

Example (3.2.5):

25_spf.cf:tflags SPF_PASS                       nice userconf

So what 'user configuration' is needed for SPF_PASS that is NOT needed
for SPF_FAIL? In general, what does a 'userconf' specification 'look for' 
before permitting a test to run?

- C