From b2evolution manual

b2evolution version 2.4

This template tag displays a footer text below the Item. This footer text can be edited by the blog owner in the admin interface under Blog Settings > Advanced > Meta Data.

Two different texts can be configured:

• One that displays in single post view. (That is when 'mode' is set to 'single' or to '#')
• One that displays in RSS/Atom feeds. (That is when mode is set to 'xml')

[edit] Example

<source lang="php"> <?php // Display Item footer text (text can be edited in Blog Settings): $Item->footer( array(

   'mode'        => '#'       // Will detect 'single' from $disp automatically

'block_start' => '',

 ) );

?> </source>

[edit] Parameters

Name	Default	Usage
mode	'#'	Effective valid values are 'single' and 'xml'. If you pass '#' , this will be replaced with the value of $disp which will result in displaying the 'single" footer text on single post page and displaying nothing on other pages.
block_start	<div class="item_footer">	Displayed before the text (if a footer text is displayed)
block_end	</div>	Displayed after the text (if a footer text is displayed)

[edit] Return value

This function return false, if there is no any text defined for item footer.
If there is defined text then this function return true and displays content.