Npc window Clickable Contents

[rans 7]

Hi guys how can i create like this npc window?
When you click the linked text it will show the description of item.
http://imgur.com/a/9CQBn

[Ridley 295]

mes "<ITEMLINK>This is an apple<INFO>512</INFO></ITEMLINK>";

 

 

[rans 7]

thanks