Drupal 7 Module Development

Chapter 5
This is used in a variety of display contexts—as your page's heading, in the HTML
tag and as a subheading in the administration interface in combination
with the description (if you are defining an administrative menu item).
'description' => 'Configuration for the User Warn module.',
The description is just that—a longer text description of the page that this menu
item defines. This should provide the user with more detailed information about the
actions they can take on this page. This description is also used as the title tag when
you hover over a link.
Menu item titles and descriptions are passed through t() internally
by Drupal, so this is one case where we don't need to worry about
doing that ourselves.
For an administration page, these two items define how your page is listed in
Drupal's admin area as shown in the following:
The next two items define what will happen when your page is requested:
'page callback' => 'drupal_get_form',
'page arguments' => array('user_warn_form'),
'page callback' defines the function that will get called (without the parentheses)
and 'page arguments' contains an array of arguments that get passed to
this function.
Often you will create a custom function that processes, formats, and returns
specific data. However, in our case we are calling the internal Drupal function
drupal_get_form() that returns an array as defined by Drupal's Form API. As an
argument we are passing the form ID of the form we want to display. We will dive
into drupal_get_form() and the Form API in more detail later in the chapter.
The fifth item controls who can access your page.
'access arguments' => array('administer users'),
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