This is an example of a simple Squarespace HTML page.
To edit the content of this page, click on the 'A' in the upper right, then click 'edit page'. To remove this page entirely, click on the 'Cube' in the upper right, then interact with this page in your site's navigation bar.
Absolutely anything can be changed on this. I mean anything. And all without knowing any HTML!
This is a good example.