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Bug#243085: About the 'Back' button (from #260934)

Just to provide more information, I also experienced an akward situation 
when confronting a single 'Back' button in the installer. Mainly, I was 
used to both boot-floppies and other installations in which you:

1.- first fill in the form information
2.- then push a button to continue

Since I was expecting 2, instead of hitting <ENTER> after filling in the 
form, I always hit <TAB> <ENTER>, expecting the default next step after the 
form would be "Continue".

In d-i, the "next step" is always "Back", as a consequence I was always 
going around in circles (Select an option->Fill in the option's 
information->Push back->Select the same option again->....)

Maybe the "Continue" button does not make sense when you have a select list 
and you have to select an option (i.e. move to the option, press <ENTER>) 
and this is probably true (the option of moving to the option, thus 
selecting it, and then select the Continue button and press <ENTER> might 
be awkward). But I think the "Continue" button should be provided when 
asking users for information. That way uses could do:

a) introduce all the information in the form and press <ENTER> in the last 
field to continue
b) introduce all the information in the form, select the button and press 
<ENTER> to continue

This is analogous to how web browsers work, for example, not to mention 
quite a number of UI and GUI applications (actually, in most UI/GUI 
applications there is only one button, which is always 'OK' or 'Continue'). 

Notice that debconf, for example, which doesn't provide a 'Back' button,
always shows an 'OK' button even if you can use the a) option to input
information (i.e. not use the button). That might make users feel awkward
since, on the first installation steps, they are first confronted with
cdebconf and 'learn' that buttons are only for going back and, in later 
steps, they might associate this and think that debconf's buttons are for 
going back which they are not. Obviously, the button says so itself, but 
people working fast might not notice this until they make a mistake 
(see a screen->[think, no, I want to go back]->push OK without 
changing the default->[think, damn, I wanted to go back!])

Removing the 'OK' button and, thus, the second option leads, IMHO, to
confusion since some users (like myself) might be more used to the b)
option in UI/GUI environments.

Just my 2c.


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