Marcus Downing

Add the option for a third column on the Edit Post and Edit Page screens. This is useful if you have a lot of boxes on your edit screen, from custom taxonomies and plugins.
Also adds a pair of mini columns underneath the edit boxes, giving you space for more small boxes.

Third Column

Спасибо создателю плагина. В одно нажатие задача решается этим плагином.
Есть минус: в начале кода плагина идут 2 пустых символа, что вызывает ошибки на сайте. Зайдите в код плагина и удалите их.



Делаем 3 колонки в админке при публикации записи

Adds a third column on the Edit Post screen.

Aaron Butacov

This simple plugin allows you to use the tab-key inside the post editor to indent code or paragraphs.
This plugin should work with all versions of WordPress, but has not been tested in versions earlier than 2.9
<ul>
<li>Allows for both multi-line and single line indenting</li>
<li>Works in all major browsers.</li>
<li>Toggle-able on each post. Enable or disable tabs automatically without reloading the page.</li>
<li>Only works in the HTML editor</li>
</ul>

Tabs in Post Editor

Write code in the WP post editor? Hate not being able to use [tab]s? Now you can.

Third Column vs Tabs in Post Editor