+ * Request (u)xterm to use the sixel settings we need:
+ *
+ * - enable sixel scrolling
+ *
+ * - disable private color registers (so that we can use one common
+ * palette)
+ *
+ * @return the string to emit to xterm
+ */
+ private String xtermSetSixelSettings() {
+ return "\033[?80h\033[?1070l";
+ }
+
+ /**
+ * Restore (u)xterm its default sixel settings:
+ *
+ * - enable sixel scrolling
+ *
+ * - enable private color registers