Regular notice. Speculation in commodities (grain, cotton, coffee etc.) is in certificates
(warehouse receipts which call for the actual property). On a future contract (a contract calling for
the delivery of the commodity in a specified future month) which is at seller's option a certain
number (according to the rules of an exchange) of days' notice must be given by the seller to the
buyer of an intention to deliver the commodity (that is, the certificate representing it) and collect
payment for it. When the contract is at buyer's option a certain number of days' notice to make
delivery must be given by the buyer to the seller. This notice is called a regular notice. There also
is a short notice; see Short notice.