WordPress at a glance
function is not described

Text_Diff_Renderer::_startBlock() public WP 1.0

It's a method of the class: Text_Diff_Renderer{}

No Hooks.

Return

Null. Nothing.

Usage

$Text_Diff_Renderer = new Text_Diff_Renderer();
$Text_Diff_Renderer->_startBlock( $header );

Code of Text_Diff_Renderer::_startBlock() WP 5.5.1

<?php
function _startBlock($header)
{
    return $header . "\n";
}