Hi 

How do I change the 'write a review' button title under a blog article to 'have your say' or 'add comment'?

Also can I change the 'send review' button to just 'send' or 'add comment'

The blog I'm creating is a discussion website and people will be adding their ideas and views to a debate. The 'write a review' button is not an appropriate button for this type of website, can you show me how to change it please? 

Many thanks 

John