Do you want to add tile pavers on a slab, 2x6 joists in a section drawing, or wood shake to a roof section? The repeating Detail Tool will draft detail components along a line you define at spacing you define. Go to Drafting... Repeating Detail... Edit/New... Duplicate. Here you can add new Repeating Details to your project. You must first load the detail component you want to repeat.
Any Revit Text you place in a Detail Component will not show up when you go to use the component in a repeating detail. If you want to add text to your repeating detail you'll have to first import AutoCAD text into your detail component.