diff --git a/cmd-choose-tree.c b/cmd-choose-tree.c
index 186672f4..1dfb04f5 100644
--- a/cmd-choose-tree.c
+++ b/cmd-choose-tree.c
@@ -33,8 +33,8 @@ const struct cmd_entry cmd_choose_tree_entry = {
 	.name = "choose-tree",
 	.alias = NULL,
 
-	.args = { "F:f:GK:NO:rst:wyZ", 0, 1, cmd_choose_tree_args_parse },
-	.usage = "[-GNrswZ] [-F format] [-f filter] [-K key-format] "
+	.args = { "F:f:GK:kNO:rst:wyZ", 0, 1, cmd_choose_tree_args_parse },
+	.usage = "[-GkNrswZ] [-F format] [-f filter] [-K key-format] "
 		 "[-O sort-order] " CMD_TARGET_PANE_USAGE " [template]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -47,8 +47,8 @@ const struct cmd_entry cmd_choose_client_entry = {
 	.name = "choose-client",
 	.alias = NULL,
 
-	.args = { "F:f:K:NO:rt:yZ", 0, 1, cmd_choose_tree_args_parse },
-	.usage = "[-NrZ] [-F format] [-f filter] [-K key-format] "
+	.args = { "F:f:K:kNO:rt:yZ", 0, 1, cmd_choose_tree_args_parse },
+	.usage = "[-kNrZ] [-F format] [-f filter] [-K key-format] "
 		 "[-O sort-order] " CMD_TARGET_PANE_USAGE " [template]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -61,8 +61,8 @@ const struct cmd_entry cmd_choose_buffer_entry = {
 	.name = "choose-buffer",
 	.alias = NULL,
 
-	.args = { "F:f:K:NO:rt:yZ", 0, 1, cmd_choose_tree_args_parse },
-	.usage = "[-NrZ] [-F format] [-f filter] [-K key-format] "
+	.args = { "F:f:K:kNO:rt:yZ", 0, 1, cmd_choose_tree_args_parse },
+	.usage = "[-kNrZ] [-F format] [-f filter] [-K key-format] "
 		 "[-O sort-order] " CMD_TARGET_PANE_USAGE " [template]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -75,8 +75,8 @@ const struct cmd_entry cmd_customize_mode_entry = {
 	.name = "customize-mode",
 	.alias = NULL,
 
-	.args = { "F:f:Nt:yZ", 0, 0, NULL },
-	.usage = "[-NZ] [-F format] [-f filter] " CMD_TARGET_PANE_USAGE,
+	.args = { "F:f:kNt:yZ", 0, 0, NULL },
+	.usage = "[-kNZ] [-F format] [-f filter] " CMD_TARGET_PANE_USAGE,
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
diff --git a/cmd-display-panes.c b/cmd-display-panes.c
index efa7c7e4..5a1782ff 100644
--- a/cmd-display-panes.c
+++ b/cmd-display-panes.c
@@ -76,6 +76,40 @@ cmd_display_panes_put(struct screen_redraw_ctx *ctx,
 	}
 }
 
+static void
+cmd_display_panes_draw_format(struct screen_redraw_ctx *ctx,
+    struct window_pane *wp, u_int xoff, u_int yoff, u_int sx,
+    const struct grid_cell *gc)
+{
+	struct client		*c = ctx->c;
+	struct tty		*tty = &c->tty;
+	struct session		*s = c->session;
+	struct screen		 screen;
+	struct screen_write_ctx	 sctx;
+	struct visible_ranges	*r;
+	struct visible_range	*ri;
+	const char		*format;
+	char			*expanded;
+	u_int			 i, px = ctx->ox + xoff;
+
+	format = options_get_string(s->options, "display-panes-format");
+	expanded = format_single(NULL, format, c, s, s->curw, wp);
+
+	screen_init(&screen, sx, 1, 0);
+	screen_write_start(&sctx, &screen);
+	format_draw(&sctx, gc, sx, expanded, NULL, 0);
+	screen_write_stop(&sctx);
+	free(expanded);
+
+	r = screen_redraw_get_visible_ranges(wp, px, wp->yoff, sx, NULL);
+	for (i = 0; i < r->used; i++) {
+		ri = &r->ranges[i];
+		tty_draw_line(tty, &screen, ri->px - px, 0, ri->nx,
+		    ri->px - ctx->ox, yoff, gc, NULL);
+	}
+	screen_free(&screen);
+}
+
 static void
 cmd_display_panes_draw_pane(struct screen_redraw_ctx *ctx,
     struct window_pane *wp)
@@ -89,8 +123,8 @@ cmd_display_panes_draw_pane(struct screen_redraw_ctx *ctx,
 	u_int			 pane, idx, px, py, i, j, xoff, yoff, sx, sy;
 	u_int			 cx, cy;
 	int			 colour, active_colour;
-	char			 buf[16], lbuf[16], rbuf[16], *ptr;
-	size_t			 len, llen, rlen;
+	char			 buf[16], lbuf[16], *ptr;
+	size_t			 len, llen;
 
 	if (wp->xoff + (int)wp->sx <= ctx->ox ||
 	    wp->xoff >= ctx->ox + (int)ctx->sx ||
@@ -159,7 +193,6 @@ cmd_display_panes_draw_pane(struct screen_redraw_ctx *ctx,
 		bgc.bg = colour;
 	}
 
-	rlen = xsnprintf(rbuf, sizeof rbuf, "%ux%u", wp->sx, wp->sy);
 	if (pane > 9 && pane < 35)
 		llen = xsnprintf(lbuf, sizeof lbuf, "%c", 'a' + (pane - 10));
 	else
@@ -207,13 +240,9 @@ cmd_display_panes_draw_pane(struct screen_redraw_ctx *ctx,
 
 	if (sy <= 6)
 		goto out;
-	tty_attributes(tty, &fgc, &grid_default_cell, NULL, NULL);
-	if (rlen != 0 && sx >= rlen) {
-		cx = xoff + sx - rlen;
-		cy = yoff;
-		cmd_display_panes_put(ctx, wp, cx, cy, rbuf, rlen);
-	}
+	cmd_display_panes_draw_format(ctx, wp, xoff, yoff, sx, &fgc);
 	if (llen != 0) {
+		tty_attributes(tty, &fgc, &grid_default_cell, NULL, NULL);
 		cx = xoff + sx / 2 + len * 3 - llen - 1;
 		cy = yoff + py + 5;
 		cmd_display_panes_put(ctx, wp, cx, cy, lbuf, llen);
diff --git a/cmd-split-window.c b/cmd-split-window.c
index 97fa9ae3..77576901 100644
--- a/cmd-split-window.c
+++ b/cmd-split-window.c
@@ -38,11 +38,11 @@ const struct cmd_entry cmd_new_pane_entry = {
 	.name = "new-pane",
 	.alias = "newp",
 
-	.args = { "bc:de:EfF:hIkl:Lm:p:PR:s:S:t:vx:X:y:Y:Z", 0, -1, NULL },
+	.args = { "bc:de:EfF:hIkl:Lm:p:PR:s:S:t:T:vx:X:y:Y:Z", 0, -1, NULL },
 	.usage = "[-bdefhIklPvZ] [-c start-directory] [-e environment] "
 		 "[-F format] [-l size] [-m message] [-p percentage] "
 		 "[-s style] [-S active-border-style] "
-		 "[-R inactive-border-style] [-x width] [-y height] "
+		 "[-R inactive-border-style] [-T title] [-x width] [-y height] "
 		 "[-X x-position] [-Y y-position] " CMD_TARGET_PANE_USAGE " "
 		 "[shell-command [argument ...]]",
 
@@ -56,11 +56,11 @@ const struct cmd_entry cmd_split_window_entry = {
 	.name = "split-window",
 	.alias = "splitw",
 
-	.args = { "bc:de:EfF:hIkl:m:p:PR:s:S:t:vZ", 0, -1, NULL },
+	.args = { "bc:de:EfF:hIkl:m:p:PR:s:S:t:T:vZ", 0, -1, NULL },
 	.usage = "[-bdefhIklPvZ] [-c start-directory] [-e environment] "
 		 "[-F format] [-l size] [-m message] [-p percentage] "
 		 "[-s style] [-S active-border-style] "
-		 "[-R inactive-border-style] " CMD_TARGET_PANE_USAGE " "
+		 "[-R inactive-border-style] [-T title] " CMD_TARGET_PANE_USAGE " "
 		 "[shell-command [argument ...]]",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -85,7 +85,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 	struct cmd_find_state	 fs;
 	int			 input, empty, is_floating, flags = 0;
 	const char		*template, *style;
-	char			*cause = NULL, *cp;
+	char			*cause = NULL, *cp, *title;
 	struct args_value	*av;
 	u_int			 count = args_count(args);
 
@@ -194,6 +194,12 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
 				"remain-on-exit-format",
 				0, "%s", args_get(args, 'm'));
 	}
+	if (args_has(args, 'T')) {
+		title = format_single_from_target(item, args_get(args, 'T'));
+		screen_set_title(&new_wp->base, title);
+		notify_pane("pane-title-changed", new_wp);
+		free(title);
+	}
 
 	if (input) {
 		switch (window_pane_start_input(new_wp, item, &cause)) {
diff --git a/options-table.c b/options-table.c
index d743cdf1..89f2f90e 100644
--- a/options-table.c
+++ b/options-table.c
@@ -647,6 +647,14 @@ const struct options_table_entry options_table[] = {
 	  .text = "Colour of not active panes for 'display-panes'."
 	},
 
+	{ .name = "display-panes-format",
+	  .type = OPTIONS_TABLE_STRING,
+	  .scope = OPTIONS_TABLE_SESSION,
+	  .default_str = "#[align=right]#{pane_width}x#{pane_height}",
+	  .text = "Format of text shown by 'display-panes', expanded for each "
+		  "pane."
+	},
+
 	{ .name = "display-panes-time",
 	  .type = OPTIONS_TABLE_NUMBER,
 	  .scope = OPTIONS_TABLE_SESSION,
diff --git a/screen-write.c b/screen-write.c
index ceec45a3..30fe0053 100644
--- a/screen-write.c
+++ b/screen-write.c
@@ -2916,16 +2916,22 @@ void
 screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
     int cursor)
 {
-	struct tty_ctx		 ttyctx;
-	struct window_pane	*wp = ctx->wp;
+	struct tty_ctx			 ttyctx;
+	struct window_pane		*wp = ctx->wp;
+	struct window_pane_resize	*r, *r1;
 
 	if (wp != NULL && !options_get_number(wp->options, "alternate-screen"))
 		return;
 
 	screen_write_collect_flush(ctx, 0, __func__);
-	screen_alternate_on(ctx->s, gc, cursor);
+	if (!screen_alternate_on(ctx->s, gc, cursor))
+		return;
 
 	if (wp != NULL) {
+		TAILQ_FOREACH_SAFE (r, &wp->resize_queue, entry, r1) {
+			TAILQ_REMOVE(&wp->resize_queue, r, entry);
+			free(r);
+		}
 		layout_fix_panes(wp->window, NULL);
 		server_redraw_window_borders(wp->window);
 	}
@@ -2947,7 +2953,8 @@ screen_write_alternateoff(struct screen_write_ctx *ctx, struct grid_cell *gc,
 		return;
 
 	screen_write_collect_flush(ctx, 0, __func__);
-	screen_alternate_off(ctx->s, gc, cursor);
+	if (!screen_alternate_off(ctx->s, gc, cursor))
+		return;
 
 	if (wp != NULL) {
 		layout_fix_panes(wp->window, NULL);
diff --git a/screen.c b/screen.c
index 2c78c5ac..233f2d06 100644
--- a/screen.c
+++ b/screen.c
@@ -672,7 +672,7 @@ screen_reflow(struct screen *s, u_int new_x, u_int *cx, u_int *cy, int cursor)
  * Enter alternative screen mode. A copy of the visible screen is saved and the
  * history is not updated.
  */
-void
+int
 screen_alternate_on(struct screen *s, struct grid_cell *gc, int cursor)
 {
 	u_int		 sx, sy;
@@ -681,7 +681,7 @@ screen_alternate_on(struct screen *s, struct grid_cell *gc, int cursor)
 #endif
 
 	if (SCREEN_IS_ALTERNATE(s))
-		return;
+		return 0;
 	sx = screen_size_x(s);
 	sy = screen_size_y(s);
 
@@ -703,10 +703,12 @@ screen_alternate_on(struct screen *s, struct grid_cell *gc, int cursor)
 
 	s->saved_flags = s->grid->flags;
 	s->grid->flags &= ~GRID_HISTORY;
+
+	return 1;
 }
 
 /* Exit alternate screen mode and restore the copied grid. */
-void
+int
 screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
 {
 	u_int		 sx = screen_size_x(s), sy = screen_size_y(s);
@@ -738,7 +740,7 @@ screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
 			s->cx = screen_size_x(s) - 1;
 		if (s->cy > screen_size_y(s) - 1)
 			s->cy = screen_size_y(s) - 1;
-		return;
+		return 0;
 	}
 
 	/* Restore the saved grid. */
@@ -767,6 +769,8 @@ screen_alternate_off(struct screen *s, struct grid_cell *gc, int cursor)
 		s->cx = screen_size_x(s) - 1;
 	if (s->cy > screen_size_y(s) - 1)
 		s->cy = screen_size_y(s) - 1;
+
+	return 1;
 }
 
 /* Get mode as a string. */
diff --git a/server-client.c b/server-client.c
index 25719f36..44b85253 100644
--- a/server-client.c
+++ b/server-client.c
@@ -1586,10 +1586,7 @@ server_client_resize_timer(__unused int fd, __unused short events, void *data)
 static void
 server_client_check_pane_resize(struct window_pane *wp)
 {
-	struct window_pane_resize	*r;
-	struct window_pane_resize	*r1;
-	struct window_pane_resize	*first;
-	struct window_pane_resize	*last;
+	struct window_pane_resize	*r, *r1, *first, *last;
 	struct timeval			 tv = { .tv_usec = 250000 };
 
 	if (TAILQ_EMPTY(&wp->resize_queue))
diff --git a/tmux.1 b/tmux.1
index f0dafb1a..94597786 100644
--- a/tmux.1
+++ b/tmux.1
@@ -2743,7 +2743,7 @@ the end of the visible pane.
 The default is to capture only the visible contents of the pane.
 .It Xo
 .Ic choose\-client
-.Op Fl NryZ
+.Op Fl kNryZ
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl K Ar key\-format
@@ -2816,10 +2816,12 @@ specifies the format for each item in the list and
 a format for each shortcut key; both are evaluated once for each line.
 .Fl N
 starts without the preview or if given twice with the larger preview.
+.Fl k
+kills the pane when the mode is exited.
 This command works only if at least one client is attached.
 .It Xo
 .Ic choose\-tree
-.Op Fl GNrswyZ
+.Op Fl GkNrswyZ
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl K Ar key\-format
@@ -2909,10 +2911,12 @@ starts without the preview or if given twice with the larger preview.
 .Fl G
 includes all sessions in any session groups in the tree rather than only the
 first.
+.Fl k
+kills the pane when the mode is exited.
 This command works only if at least one client is attached.
 .It Xo
 .Ic customize\-mode
-.Op Fl NZ
+.Op Fl kNZ
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl t Ar target\-pane
@@ -2960,6 +2964,8 @@ If a filter would lead to an empty list, it is ignored.
 specifies the format for each item in the tree.
 .Fl N
 starts without the option information.
+.Fl k
+kills the pane when the mode is exited.
 This command works only if at least one client is attached.
 .It Xo
 .Tg displayp
@@ -3341,6 +3347,7 @@ but a different format may be specified with
 .Op Fl s Ar style
 .Op Fl S Ar active\-border\-style
 .Op Fl t Ar target\-pane
+.Op Fl T Ar title
 .Op Ar shell\-command Op Ar argument ...
 .Xc
 .D1 Pq alias: Ic newp
@@ -3359,6 +3366,8 @@ sets the border style when the pane is active and
 .Fl R
 sets the border style when the pane is inactive (see
 .Sx STYLES ) .
+.Fl T
+sets the pane title.
 .Pp
 .Fl h
 does a horizontal split and
@@ -3756,6 +3765,7 @@ the command behaves like
 .Op Fl s Ar style
 .Op Fl S Ar active\-border\-style
 .Op Fl t Ar target\-pane
+.Op Fl T Ar title
 .Op Ar shell\-command Op Ar argument ...
 .Xc
 .D1 Pq alias: Ic splitw
@@ -4794,6 +4804,12 @@ command to show the indicator for the active pane.
 Set the colour used by the
 .Ic display\-panes
 command to show the indicators for inactive panes.
+.It Ic display\-panes\-format Ar format
+Set the
+.Ar format
+of the text shown by the
+.Ic display\-panes
+command, expanded for each pane.
 .It Ic display\-panes\-time Ar time
 Set the time in milliseconds for which the indicators shown by the
 .Ic display\-panes
@@ -7617,7 +7633,7 @@ The buffer commands are as follows:
 .Bl -tag -width Ds
 .It Xo
 .Ic choose\-buffer
-.Op Fl NryZ
+.Op Fl kNryZ
 .Op Fl F Ar format
 .Op Fl f Ar filter
 .Op Fl K Ar key\-format
@@ -7688,6 +7704,8 @@ specifies the format for each item in the list and
 a format for each shortcut key; both are evaluated once for each line.
 .Fl N
 starts without the preview.
+.Fl k
+kills the pane when the mode is exited.
 This command works only if at least one client is attached.
 .Tg clearhist
 .It Xo Ic clear\-history
diff --git a/tmux.h b/tmux.h
index 870e778b..292d6ad1 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1181,6 +1181,8 @@ struct window_mode_entry {
 	struct screen			*screen;
 	u_int				 prefix;
 
+	int				 kill;
+
 	TAILQ_ENTRY(window_mode_entry)	 entry;
 };
 
@@ -3388,8 +3390,8 @@ void	 screen_hide_selection(struct screen *);
 int	 screen_check_selection(struct screen *, u_int, u_int);
 int	 screen_select_cell(struct screen *, struct grid_cell *,
 	     const struct grid_cell *);
-void	 screen_alternate_on(struct screen *, struct grid_cell *, int);
-void	 screen_alternate_off(struct screen *, struct grid_cell *, int);
+int	 screen_alternate_on(struct screen *, struct grid_cell *, int);
+int	 screen_alternate_off(struct screen *, struct grid_cell *, int);
 const char *screen_mode_to_string(int);
 const char *screen_print(struct screen *, int);
 
diff --git a/window.c b/window.c
index 0d86ac50..fefb9fe2 100644
--- a/window.c
+++ b/window.c
@@ -1224,6 +1224,7 @@ window_pane_set_mode(struct window_pane *wp, struct window_pane *swp,
 		TAILQ_INSERT_HEAD(&wp->modes, wme, entry);
 		wme->screen = wme->mode->init(wme, fs, args);
 	}
+	wme->kill = args_has(args, 'k');
 	wp->screen = wme->screen;
 
 	wp->flags |= (PANE_REDRAW|PANE_REDRAWSCROLLBAR|PANE_CHANGED);
@@ -1241,11 +1242,13 @@ window_pane_reset_mode(struct window_pane *wp)
 {
 	struct window_mode_entry	*wme, *next;
 	struct window			*w = wp->window;
+	int				 kill;
 
 	if (TAILQ_EMPTY(&wp->modes))
 		return;
 
 	wme = TAILQ_FIRST(&wp->modes);
+	kill = wme->kill;
 	TAILQ_REMOVE(&wp->modes, wme, entry);
 	wme->mode->free(wme);
 	free(wme);
@@ -1268,6 +1271,9 @@ window_pane_reset_mode(struct window_pane *wp)
 	server_redraw_window_borders(wp->window);
 	server_status_window(wp->window);
 	notify_pane("pane-mode-changed", wp);
+
+	if (kill)
+		server_kill_pane(wp);
 }
 
 void