Each input file has at least one corresponding source page. Only one page is visible, and it occupies the main part of the Merge Tool display. The page displayed can be selected by clicking on the Source tabs just below the menu bar. The entries in the page identify the cells to extract and the processing to be performed.
The required Path to Source field contains the path to the associated layout file, and the file must be in one of the supported formats. This entry can also be the access name of a Cell Hierarchy Digest (CHD) in memory, or a path to a saved CHD file on disk. In either case, the CHD will then be used to access the content of the associated file.