ParaView/Users Guide/Multi-Block Inspector
The Multi-Block Inspector panel allows users to change the rendering and display properties for individual blocks within a multi-block data set.
The visibility of individual blocks can be changed by toggling the check box next to their name. By default, blocks will inherit the visibility status of their parent block. Thus, changing the visibility of a non-leaf block will also change the visibility of each child block.
Selections made in the render-view will be linked with the items in the multi-block inspector and visa versa. Using block selection (keyboard shortcut: 'b') and clicking on a block will result in that block being highlighted in the tree view.