I have a admin config page. 

Where i have successfully listed my module. 

I want to add a text block with procedures to follow. What is the tag that i should use in system.xml in order to use a text block.

I dont want to display it using comment tag since the content is long and it looks cluttered. Also, Is there a option to Link a text in the custom module to an external website like <a href? is there any option?