but they are in a word
a absolute
b basic
c close
d distant
e elusive


the best &
simplest classification system embraces only 5 degrees of success &
deliberately fails to reach the letter f so that the 5 classes in order of
descending precision are

a absolutely arrived at authoritative accuracy

b basically been baptised bare bottom

& best possible for unmarked wetpoints 

c clear clean closeup camera call

d distant diffused depiction deserving 

e elusively excellent etc

but as for what they are about i guess it is just ready reference & comparison
tho i suppose they could also become part of a scoring system too if someone
could think up a suitable game

m


i would have just answered
a absolutely
b been there
c close
d distant &
e elusive


if you touched the place on the monument that marks the tripoint
such as 
usually 
the vertex of an obelisk or a crosshairs or dimple on a flat top
then you visited your point class a
absolutely

you absolutely made your point
assuming the rock wasnt too dilapidated to still be accurate 
or otherwise compromised


but if the tripoint hadnt been marked by any monument
as is the case with few dry but most wet points for example
then a visit couldnt be absolutely validated but only indirectly 
inferred from secondary data
so the best possible visit try would only have been class b

a basic visit all right but still perhaps a little blurred

& probably only in such a case btw might a gps reading for 
example have been useful for validation

but class b is not necessarily less accurate or less good than 
class a 

rather class b is only probably less accurate than class a
no matter how carefully one may have tried
as well as definitely different in quality

these 2 top classes are both the best possible visits for their 
respective situations & conditions


now 
back to your monumented tripoint or all tripoints generally

if you didnt actually touch the tripoint but merely saw it distinctly
however close you may have come
then that is only class c
as in close

if you saw the tripoint from such a distance that it was indistinct
or could only be generally or approximately visualized
then that is only class d
as in distant


& if you earnestly tried but never reached or even saw the tripoint
whether from a great distance or even from right beside the 
marker
then that is class e
as in elusive

thats right
there have actually been cases where someone saw & even 
touched the marker but still never reached nor even saw the 
tripoint itself


so our abcde classes dont really describe relative distances but 
only characteristics of relative precision & clarity

& they apply equally to visits or to photos of visits btw