It is essentially a loan given to the player, allowing them to gamble without needing to immediately provide cash. The player signs a promissory note, agreeing to repay the loan amount within a specified time frame. Markers are commonly used by high-stakes players, and failure to repay can result in legal action.
Marker Example
For example, if a player runs out of cash during a craps game but wishes to continue, they might request a $10,000 marker from the casino, agreeing to pay it back within a week.