Which function displays a login link?

In the case of a free WordPress.com blog, the number of users that can be invited by a registered user is:

In which hook is the safest to fire a remove_menu_page to menus created by plugins?

Can you properly add you own WP code before the first action hook 'plugins_loaded' without hacking the core ?

What color picker JavaScript library shipped with version 3.4?

Which template tag is used to optionally display a list of the pages in a page or blog post that has been split into multiple pages (using )?

Does WordPress have official unit tests?

What function do you use to programmatically update a post?

When using translatable text strings in a JavaScript file, which function localizes those strings for the JavaScript file?

The WordPress default theme consists of the following items:

What is the function that check if the user is logged in?