Continue wagering according to the pattern until you clear all the numbers in the series. Crossing out the whole system means that you won your desired amount and completed the Labouchere system. You may now write a new sequence and follow these steps to win once again.
You missed out the most important point. You should have said: Continue wagering according to the pattern until you clear all the numbers in the series or, more likely, you run out of money. Given that every casino has a house edge, if you follow this (or any other) system long enough you
will end up at zero.
Obviously we all know that in the long run any strategy are bound to fail especially if applied to any house edge gambling games.
OP just is just stating what Labouchere Betting is all about. Kind of information to anybody what kind of betting system is that just in case you read it somewhere. Same as explaining what is martingale or any betting system type etc.
Thanks for sharing the information and OP is able to caught me as one of the visitor on the site.