protected ListingModel createListingModel(Program program) {
		if (program == null) {
			return null;
		}

		return new ProgramBigListingModel(program, formatManager);
	}
A width for new windows that shows a reasonable amount of the Listing

@return the width
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/listingpanel/ListingPanel.java