P.L.M.

> Installed here, with fatigue suddenly banished and the large P.L.M. weaving within the mesh of the lace its thrilling assurance of being launched on long continental distances…

"Of the six main-line railways serving the French republic the greatest is the Paris, Lyons and Mediterranean, or the PLM as it is almost universally known."

https://www.railwaywondersoftheworld.com/southern\_france.html