Change title and text of reaction form and omit HTML section

Hi!

I’m wondering how to change the title and the text of the reaction form.
I’m using the Dutch language in Enfold and my reaction form starts with the title:
“Laat een reactie achter” and then two lines text:
“Wilt u zich mengen in de discussie?
Voel u niet bezwaard om bij te dragen!”

At the end of the form it says:
De volgende HTML tags en attributen zijn toegestaan: […] Followed by some html codes.

I would like to be able to change the title and the two following lines of text (preferable just for a particular page), and completely omit the section that deals with HTML.

Thanks in advance for your help!