private void setUpAttributes() {

		Font bold = Gui.getFont("font.standard.bold");
		Font monospaced = Gui.getFont("font.monospaced");
		textAttrSet =
			new GAttributes(monospaced, new GColor("color.fg.plugin.comments.history.text"));
		userAttrs = new GAttributes(bold, new GColor("color.fg.plugin.comments.history.user"));
		dateAttrs = new GAttributes(bold, new GColor("color.fg.plugin.comments.history.date"));

		tabAttrSet = new SimpleAttributeSet();
		TabStop tabs = new TabStop(100, StyleConstants.ALIGN_LEFT, TabStop.LEAD_NONE);
		StyleConstants.setTabSet(tabAttrSet, new TabSet(new TabStop[] { tabs }));
	}
Show the comment history
@param program program
@param addr address of comment history
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/comments/CommentHistoryPanel.java