link.linkExist function ?

[Olivier]

Hi Ruslan and list,

It would maybe be interesting to have for the binary links an 
equivalent function of vfield.valueExist ().
It would be useful to know if a binary link already exists for a record:

E.g.

Boolean=link1.linkExist (recId, tbA, tbB)

For example, for tables M:M. Before binary linking two records of two 
tables, it is sometimes necessary to know if there is already no link 
between these two records.

olivier