The number of items that the user is allowed to place in the shopping cart.
Some poorly-mannered robots may ``attack'' your site by following all links
one after another. Some even ignore any robots.txt file you may have created. If one of these bad robots orders several dozen
or more items, then the time required to save and restore the shopping cart
from the user session may become excessive.
If the limit is exceeded, then the command defined in the Global directive LockoutCommand will be executed and the shopping cart will be emptied. The default is 0, disabling the check. Set it to a number greater than the number of line items you ever expect a user to order.
OrderLineLimit 50