InDesign page bleed lines and interior margin lines disappeared

Probably accidently hit a key and looking to fix. Problem is file specific, other documents not affected.

• The pasteboard, where I place photos that I'm planning to move in a bit, has gone all gray leaving no images behind.
• The bleed lines around the outsides of the pages is no longer visible.
• The outlines inside the pages that define the margins have also disappeared.

After visiting Help in InDesign, I went to Preference, Guides and pasteboard; View and View, Extra specifically; tried Grid lines etc., but nothing I've selected affects changes.