How is the display in a view renamed? When you make a copy of one of  displays of a view the new display is given a name like Page 2. How do you rename that display? I can't seem to find a way of renaming the pge but I suspect there must be a link to edit it.

I have done it before and wonder whether some module or CSS change may be occluding the link required to change it.
If you want to change its machine name their option available in advance option of view or want to change its display name that will change form display.