Apparently when we will be going to CDG (Saturday for my daughter; Sunday for Ms. Bear and me) there are two kinds of RER B trains that one can take from St. Michel-Notre Dame: EFLA and EKLI*.

According to the RATP web site, the "*" means "direct depuis Gare du Nord." Does that mean that the EKLI* trains are non-stop after G du N? and the EFLA trains make several stops?

Yes as far i as can understand

and be sure to be on the non-stop train (after Gare du Nord) as on the stopping services folks can flood on at several stations

yep. EKLI is the 'express' and EFLA makes all the stops b/t Gare du Nord and CDG.

Thank you both.

The large overhead monnikers at each RER B station should clearly have no stations lit up after Gare du Nord on the non-stop service but all or nearly all on the stopping service.

Exactly PalenQ. While the RER train names can tell you the route and stops it takes I wouldn't concern yourself with memorizing train names.

The board will tell you where the train is stopping. During peak hours you typically have three repeating trains: the CDG express train stopping only at Chatelet and Gare du Nord before CDG, a train that will make multiple or all of the stops on the way to CDG, and a train that will take the Mitry-Claye spur.

I think the train "name" can be helpful to us because the TV monitor adjacent to the escalator to the platform indicates,. by "name," the time each train is expected.

The airport train will be the one with the accordion player on it

d_claude_bear,

I suppose, but most RER monitors also tell you where the train is going. Approximately every 15 minutes an express train to CDG will stop at St. Michel-Notre Dame.