Sometimes its required to hide certain parts of a scene to work on other parts which are concealed or overlapping.
- Display > Hide > Hide selection (CTRL > H)
- Display > Show > Show last hidden (SHIFT > CMD > H)
- Hidden objects in the outliner appear greyed out
- To display again, click the object in the outliner and press SHIFT + H
- You can select one object and hide all others (ALT + H)