Credit Line (blackjack)
An amount of credit established for a player at a given casino.
A player with a credit line can take a marker for any amount
of money up to the amount established in his credit line and
use it to purchase chips at the tables. The player is normally
expected to repay the marker before the end of his visit to
that casino. A credit line can be established in advance of
a casino visit in much the same fashion that a loan from a bank
would be obtained.