How do I can change the default description of elements?

Question

I'm trying to change the default descriptions in different pages like (add users). I tried devel themer to find out where there descriptions are came from but it showed nothing. for example look at this picture (add user) :

how do I can change the texts displayed by red line?

---

Update

I tested this code in template.php

function MYTHEME_form_alter(&$form, &$form_state, $form_id){
if($form_id == "user_register_form"){
    $form['account']['name'] = array(
            '#title' => t('New username'),
            '#description' => t('New description'),
    );
    }
}

Answer 1

In your code your overwriting the whole name array - you only want to update 2 properties:

function MYTHEME_form_alter(&$form, &$form_state, $form_id){
  if($form_id == "user_register_form"){
    // Here just target the #title attributes - not the whole name array
    $form['account']['name']['#title'] = t('New username');
    // Same here with description.
    $form['account']['name']['#description'] = t('New description');
  }
}

Answer 2

you can find the descriptions at user.module under user directory (in modules directory)

you can find those descriptions under user_account_form function

Ex, E-mail address field description below.

$form['account']['mail'] = array(
    '#type' => 'textfield',
    '#title' => t('E-mail address'),
    '#maxlength' => EMAIL_MAX_LENGTH,
    '#description' => t('A valid e-mail address. All e-mails from the system will be sent to this address. The e-mail address is not made public and will only be used if you wish to receive a new password or wish to receive certain news or notifications by e-mail.'),
    '#required' => TRUE,
    '#default_value' => (!$register ? $account->mail : ''),
  );

But it's better to Use hook_form_alter to achieve it