Re: Mixed L2R and R2L paragraphs and horizontal scroll

> Date: Wed, 3 Feb 2010 15:22:19 +0200
> From: "Ehud Karni" <ehud <at> unix.mvs.co.il>
> Cc: emacs-bidi <at> gnu.org, emacs-devel <at> gnu.org
> 
> In a wide screen the above will be shown as:
>     +------------------------------------------------------------+
>     |                                            NI SELIF EHT TUP|
>     |/dir1/sdr2/sdr3                                             |
>     |                                        MEHT EKAT LLIW I DNA|
>     +------------------------------------------------------------+
> 
> In a less wide screen it will be shown as:
>     +----------------------------+
>     |            NI SELIF EHT TUP|
>     |/dir1/sdr2/sdr3             |
>     |        MEHT EKAT LLIW I DNA|
>     +----------------------------+
> 
> In a wide screen with `right-margin-goal-column` set to 30:
>     +------------------------------------------------------------+
>     |              NI SELIF EHT TUP                              |
>     |/dir1/sdr2/sdr3                                             |
>     |           EHT EKAT LLIW I DNA                              |
>     +------------------------------------------------------------+
> 
> I hope this is clearer.

Yes, it's clear.  But why is the last variant better than the others?
Is there really significance to the relative horizontal positions of
characters in different lines that makes it important to preserve that
relation?