Block.tpl.php file variables for drupal 5x and 4x versions of drupal theme

Lays out content for blocks (left and/or right side of page). This template is optional, and can be overridden by copying the default template and modifying it. Available variables The $block object includes:
<?php$block->module    The name of the module that generated the block.$block->delta    The number of the block for a particular module.$block->subject    The block title.?>
<?php$block->content    The html content for the block.$block->status    Status of block (0 or 1).$block->region    Region name, by default the available regions are 'left', 'right', 'header' and 'footer'.$block->throttle:    Throttle setting.?>
Other variables includes:
<?php$directory    The directory the theme is located in, e.g. themes/garland or themes/garland/minelli.$is_front    True if the front page is currently being displayed.$id    The sequential id of the block displayed, ie: The first block is 1, the second block is 2 etc.$block_id    The same as $id, but is reset for the left and right sidebars.$zebra    Alternates between 'odd' and 'even'. This is useful for creating 'zebra stripes' with your css.$block_zebra    The same as $zebra, but is reset for the left and right sidebars.?>