Continuous

Continuous - Inserts a section break and starts the new section immediately, without inserting a page break.
This starts the new section at the insertion point. Onscreen in Normal view, you see a section break but in Print Layout and Web Layout and when you print the break is transparent.
When used properly, they are used to create a section within a page to set multiple columns (Dreamboat says just insert a two-column, one-row table instead), or to separate that areas of a fill-in form that are to be protected or unprotected.