Hide Current Selection
Once you have selected all the objects you wish to hide; you can now use this editing action in order to hide that particular set of objects.
One common use of this action, is to ensure that the 3D view that is generated would be less cluttered, and you now have fewer objects visible in the 3D view
Important note: If the current object (i.e. the one which has the helpers on one of its edges) is inside the selected set, such an object will not get hidden. The logic is natural: If the current object was hidden/deleted, the helpers would get stranded!
Press F1 inside the application to read context-sensitive help directly in the application itself