Templetes page_1.html what does style mean?

In the Folder templetes/base/page_1.html, page_2.html ... page_xx.html  what does style mean? 

When will use these style files?

Hello

Open index.php file and find the code

$_page['name_index'] = 1;
...
$_ni = $_page['name_index'];
$_page_cont[$_ni]['promo_code'] = $oIPV->getPromoCode();
$_page_cont[$_ni]['page_main_code'] = $oIPV -> getCode();

'1' means that this PHP file uses page_1.html from templates folder. If in some PHP file you see

$_page['name_index']= 0;

Then this page uses the default.html template, for example, about_us.php.

The figures may be convenient, but they totally don't know what time these pages will be used.

Thanks.

 Hello

I didn't understand the issue. If you are looking at some page in browser, for example, Mailbox (mail.php) then you need to open the mail.php file and find a row with 

$_page['name_index'] = 7;

Now you know which template (page_7.html) is used to generate the page.

My problem is I can't from the file name of the numbers, to mapping to the right module!

page_7.html ?   7 ?? what does that mean?

if they don't use number, just use "page_mailbox.html" that is easy to understand...

 Hello

Unfortunately you cannot determine a connection between HTML template and associated PHP file from this end. You need to know Dolphin sources well enough to understand which PHP file should be checked. However you may use some program which allows to make search in files' content. So, you may try to search for "page_mailbox.html" and "page_mailbox" in *.php files and find which of them calls the template. For example, you may use Total Comander for Windows for this purpose.