@Override
public void initGui() {
super.initGui();
buttonList.add(backButton = new GuiButtonBackWithShift(0, left + guiWidth / 2 - 8, top + guiHeight + 2));
buttonList.add(leftButton = new GuiButtonPage(1, left, top + guiHeight - 10, false));
buttonList.add(rightButton = new GuiButtonPage(2, left + guiWidth - 18, top + guiHeight - 10, true));
buttonList.add(shareButton = new GuiButtonShare(3, left + guiWidth - 6, top - 2));
LexiconPage page = entry.pages.get(this.page);