You can put your content here by going to Admin > Tools > Define Pages Editor > Select define_main_page.php file to edit. Any Custom text can be added here as per your requirement.

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomi.

NOTE: Always backup the files in includes/languages/english/html_includes/your_template(magnus)