[blml] convention

[Nigel]

[John Probst]
> 4N P 5H.  4N is direct Ace ask, not Black
> Is 5H a conventional call? "...length or values...". The HA is values.
>   
[nige1]

IMO, if this is not a convention then the WBFLC definition of convention 
is flawed and needs to be clarified. To most players this 5H bid is 
*conventional* because its has meaning isn't obvious unless you've 
agreed it.

IMO canape, fourth suit, cue bids, fit jumps and trial bids may all be 
*natural* in some sense. In spite of any official definition, however, 
they are all conventions.

The "Conventonal" category should include any bid for which you have an 
agreed a meaning other than the most obvious meaning. IMO *natural* and 
*artificial* are the disjoint sets. Conventional bids, however, include 
all artificial bids and many natural bids.

It is quite plain that disclosable and alertable bids should include not 
only all  artificial bids; but also any *natural* bid with a 
*conventional meaning* or *negative inferences* that may not be obvious 
to opponents.