[PD] groove~ - buffer~ and loop~

[juto aviten]

Dear Friends,
i've just seen that there's some objects called groove~ and buffer~ 
which works when i put there name in object in a pd patch... but i don't 
find any help, that's ok... but i don't find the source... strange... 
and i try to use it as in max but it's not work... does someone port 
this object to PD and does he know how they work???
Also is there any help for loop~ as i try to find in the source not 
successfully... thanks a lot!!

best

juto