Up/Down arrows wrap the menu top to bottom.

ENTER key in input box selects Ok button.

src/uifc/uifcfltk.cpp

@@ -378,6 +378,24 @@ int UIFC_Button::handle(int event)  {
 			parent()->child(i)->handle(FL_FOCUS);
 			return(1);
 		}
+		if(key==FL_Up)  {
+			for(i=0;i<parent()->children() && this!=parent()->child(i);i++)  {}
+			i=i-1;
+			if(i<0)
+				i=parent()->children()-3;
+			Fl::focus(parent()->child(i));
+			parent()->child(i)->handle(FL_FOCUS);
+			return(1);
+		}
+		if(key==FL_Down)  {
+			for(i=0;i<parent()->children() && this!=parent()->child(i);i++)  {}
+			i=i+1;
+			if(i>parent()->children()-3)
+				i=0;
+			Fl::focus(parent()->child(i));
+			parent()->child(i)->handle(FL_FOCUS);
+			return(1);
+		}
 	}
 	return Fl_Button::handle(event);
 }
@@ -489,6 +507,10 @@ int UIFC_Input_Box::handle_key() {
 		case FL_BackSpace:
 			ascii = ctrl('H');
 			break;
+		case FL_Enter:
+		case FL_KP_Enter:
+			GUI_RetVal=0;
+			return 1;
 	}
 
 	int i;