private void bold(boolean show) {
		if (show) {
			textAttrSet.addAttribute(StyleConstants.Bold, Boolean.TRUE);
		}
		else {
			textAttrSet.removeAttribute(StyleConstants.Bold);
		}
	}
Creates a formatted difference string for an individual line difference
between program1 and program2.
Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramDiffDetails.java