+LY_DEFINE (ly_grob_suicide, "ly:grob-suicide",
+ 1, 0, 0, (SCM g),
+ "Kill @var{g}.")
+{
+ Grob *me = unsmob_grob (g);
+ SCM_ASSERT_TYPE (me, g, SCM_ARG1, __FUNCTION__, "grob");
+
+ me->suicide ();
+ return SCM_UNSPECIFIED;
+}
+
+LY_DEFINE (ly_grob_translate_axis_x, "ly:grob-translate-axis!",
+ 3, 0, 0, (SCM g, SCM d, SCM a),
+ "Translate @var{g} on axis @var{a} over distance @var{d}.")
+{
+ Grob *me = unsmob_grob (g);
+ SCM_ASSERT_TYPE (me, g, SCM_ARG1, __FUNCTION__, "grob");
+ SCM_ASSERT_TYPE (scm_is_number (d), d, SCM_ARG2, __FUNCTION__, "dimension");
+ SCM_ASSERT_TYPE (is_axis (a), a, SCM_ARG3, __FUNCTION__, "axis");
+
+ me->translate_axis (scm_to_double (d), Axis (scm_to_int (a)));
+ return SCM_UNSPECIFIED;
+}
+
+LY_DEFINE (ly_spanner_p, "ly:spanner?",
+ 1, 0, 0, (SCM g),
+ "Is @var{g} a spanner object?")
+{
+ Grob *me = unsmob_grob (g);
+ bool b = dynamic_cast<Spanner*> (me);
+
+ return ly_bool2scm (b);
+}
+
+LY_DEFINE (ly_item_p, "ly:item?",
+ 1, 0, 0, (SCM g),
+ "Is @var{g} an @code{Item} object?")
+{
+ Grob *me = unsmob_grob (g);
+ bool b = dynamic_cast<Item*> (me);
+ return ly_bool2scm (b);
+}
+
+LY_DEFINE (ly_item_break_dir, "ly:item-break-dir",
+ 1, 0, 0, (SCM it),
+ "The break status dir of item @var{it}. @code{-1} is end of "
+ "line, @code{0} unbroken, and @code{1} begin of line.")
+{
+ Item *me = dynamic_cast<Item*> (unsmob_grob (it));
+ SCM_ASSERT_TYPE (me, it, SCM_ARG1, __FUNCTION__, "Item");
+ return scm_int2num (me->break_status_dir ());
+}
+