when we go for a UDF

Hi,

this is an FAQ.. so, can you please provide me the solution for this.. I'm using PI 7.0 in which scenario we need to go for UDF.. normally in PI for everything standard functions are there.. even though.. some times we need to go for an UDF's.. can anybody give the scenarios.. when exactly we need to go for a n UDF..

how can we sya this with better answer..

Thanks

babu