Just a few questions

[Erwan Jahier]

1) would it be easy to implement a primitive that retrieve the list of
ancestors of the current predicate ? (I mean a primitive which go and
look in an existing stack) Is this information always available ?

2) Is LCO switch off when tracing is on ?

3) Is there a full description of the informations contained in
io__state somewhere (I mean, more information than in the file io.m) ?
(I am looking for information that migth be usefull for the debugger)


-- 
R1.