Help on reading the NEX timetable

http://www.eki-net.com/pc/jreast-shinkansen-reservation/english/wb/com...

Hi, can anyone tell me what the single and double vertical lines mean in the attached timetable?

E.g. under "Narita Express 7", there is a single line shown for Shinagawa but double lines shown for Ikebukuro

Thanks!

a double vertical line means it bypasses those stations (different route)

And a single line means the train skips that station: it goes through that station but don't stop there. This is usually written as ƒŒ in Japanese, but the site is in English so ƒŒ can't be used, I think.

http://www.jreast.co.jp/e/nex/
http://www.jreast.co.jp/e/nex/src/img/pics/narita/box01_01.jpg

N'EX is "6 cars" based as one train.
N'EX 7 and most other N'EX for NRT
one train(car no.12 to 7) fr/via Shinjuku and no-stop Shinagawa until Tokyo
other one(car no.6 to 1) fr/via Yokohama and stop Shinagawa until Tokyo.
After Tokyo will be 6+6 total 12 cars as one train.
https://youtu.be/1AJddftWmNc

Also oppsite way separated at Tokyo for two different destinations train.
https://youtu.be/8a-FfU4fiiI
Front 6 cars(car no.1 to 6) goes to Yokohama and more stop at Shinagawa.
Rear 6 cars(car no.7 to 12) goes to Shinjuku and more but no stop Shinagawa.

So single line means just no stop(station skipped)
double line means different location track/section.
JP timetable "ƒŒ" is down arrow "Ğ" instead.
http://www.jreast-timetable.jp/1610/train/065/067611.html
Using this symbol for timetable very long time over 70 years before WW‡U.

@frog1954
ƒŒ is not Japanese ƒJƒ^ƒJƒi letter "ƒŒ(re)".
Just still using "ƒŒ(re)" letter instead as Letterpress printing/Šˆ”Ċˆóü of the old age's rule.
https://upload.wikimedia.org/wikipedia/commons/e/e0/Japanese_printing_...
Really old one used a bit different shape closer down arrow.
http://stat.ameba.jp/user_images/20150712/09/blackcat-kat/ed/75/j/o0800149013363506804.jpg
Maybe you know old printing how to.
https://youtu.be/jzZhLVwyWMU