How do you add a contextual help tab for a plugin or theme?

When adding rewrite rules via a plugin to the default WordPress environment, it is necessary to flush the rewrite rules:

Difference between WordPress Object Cache and the WordPress Transients API?

To add a network-wide option in a multisite WP instance, you'll use:

How do you store the FTP password in wp-config.php?

To create a child theme, what value is assigned to the 'Template:' key?

What is the WordPress plugin and themes repository build on?

'CODE IS POETRY'- is written in:

Pages do not use tags or categories

Which function will return the filesystem path of a given plugin?

What class is used for all database manipulations?