Rockwell Automation FactoryTalk Historian SE ProcessBook 3.2 User Guide - Manual (Page 114)

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FactoryTalk Historian ProcessBook User Guide
96
Click View > Layers. The Layers dialog box appears.
3. Review the following for additional information:
Index Specifies the index number of the layer. The index is used in
determining the display order (Z Order) of overlapping
symbols. A layer with a lower index number is lower in the
stack than one with a higher number. Higher layers may
obscure symbols in lower levels.
Count This is a read-only value that contains the number of symbols
on a layer. A composite symbol is counted once and each of
its subordinate individual symbols is also counted.
Up/down arrows Buttons at the right side of the dialog box are used to move
the relative position of one layer to another within a display.
As a layer is moved down the list, its index number becomes
larger, and vice versa. Symbols on layers with higher index
numbers may hide or cover symbols with lower-index
numbers. Locked layers cannot be reordered.