Pls help! Solid or dashed ordotted line connecting notes between bars and cleffs

[rudram]

Pls help ! I wasnt able to find what solid or dashed/dotted line connecting notes between bars and clefs (treble to bass and vise versa) represent and how to play it. These are quite common in Rachmaninov's and Chopin's music. For example in Rachmaninov Prelude in F Op. posth. - theres a line between bar 4 and 5, again in the last bar - same thing. Another example - Rachmaninov's Melodie(revised) from Morceaux de fantasie, Op 3. bar 17 - a line between B and C octave chord.
Chopin also uses dashed lines between some notes.
What r these ?
Also i saw dotted lines connecting notes in Rachmaninov s music, cant remember where, but definitely saw this.
Anyone knows what these represent ?
If there's another post about these - pls give link.
Thanks
Rudram

[outin]

If I understand correctly what you write about, these are lines to show how the different voices go when they move between the clefs.

[rudram]

thanks -  i heard of this. But could it b that the notes connected need to b taken simultaneously, like a chord ! ?  It's just the composer's writing doesnt allow them to be under each other???
 I heard of this too. How to know precisely
  Is any resource on this? 

[ajspiano]

thanks -  i heard of this. But could it b that the notes connected need to b taken simultaneously, like a chord ! ?  It's just the composer's writing doesnt allow them to be under each other???

Outin is right, and even if "the composer's writing doesnt allow them to be under each other" - if they were to be taken at the same time that would be reflected in the note durations.

[rudram]

I see, thanks everyone !