Original sentence: Most lines cross the city diametrically and only the above-mentioned inner-city circular lines serve as a unique lateral interconnection.One hundred years after the creation of its first line, today's Paris métro has 14 lines (not including two shorter "navette" lines and the Montmartre funicular), and 12 of these penetrate well into the surrounding suburbs (as two, lines 2 and 6, form a circle within Paris)
Edited sentence: After over one hundred years, the capital now has 14 lines (not including two shorter "navette" (point-to-point line) and the Montmartre funicular), 12 of which penetrate will into the surrounding suburbs (as two, lines 2 and 6, form a circle within Paris).Paris' first metro lines ran only as far as the city's limits, and this is a problem that is still being remedied today.The metro today still lacks a connection around its outer rim between its capital-bisecting lines, an installation that would facilitate communication with the outlying suburbs, but there does exist a bus line (the PC line) that for the time being more or less fulfils this purpose