How do I find a template? How I determine which template or form is responsible for processing node of page with this URL: mysite.com/node/node-number/edit ?

I think, that Drupal find the template of edit in this files:

page-node-edit.tpl.php
page-node- node-number.tpl.php
page-node.tpl.php
page.tpl.php


However, in my theme folder I have only page.tpl.php without the code of edit template, but edit template is worked.

And in template.php i heve this preprodsse_node:

function my_theme_preprocess_node(&amp;$vars) {
    $node = $vars['node'];
    switch ($node-&gt;type) {
        case 'page':
            break;
    }
}


Now I think that the CCK module to generate this form. I can change one field or a behavior of the form?

P.S.

I need to change some input in edit form. And I can't use a different version of Drupal :(
If you want to change the default value of fields in node edit form. You should looking on any *.tpl.php files. You have to define your own custom module and use hook_form_alter

You can use this if-statement inside the hook function.

// remember change [nodetype] to the one you want to alter.
if($form_id == 'nodetype_node_form'){
    // your code here
}