diff --git a/NEWS.md b/NEWS.md
index ea2d129..074a5bd 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,14 @@
+swayr v0.16.0
+=============
+
+- There's the new command `switch-to-mark-or-urgent-or-lru-window` which
+  switches to a specific window matched by mark (`con_mark`) unless it's
+  already focused.  In that case, it acts just like
+  `switch-to-urgent-or-lru-window`.  For example, you can assign a "browser"
+  mark to your browser window (using a standard sway `for_window` rule).  Then
+  you can provide "browser" as argument to this command to have a convenient
+  browser <-> last-recently-used window toggle.
+
 swayr v0.15.0
 =============
 
diff --git a/README.md b/README.md
index 2695878..593112f 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,15 @@ Right now, there are these subcommands:
   hint (if any) or to the last recently used window.
 * `switch-to-app-or-urgent-or-lru-window` switches to a specific window matched
   by application ID or window class unless it's already focused.  In that case,
-  it acts just like `switch-to-urgent-or-lru-window`.
+  it acts just like `switch-to-urgent-or-lru-window`.  For example, you can
+  provide "firefox" as argument to this command to have a convenient firefox
+  <-> last-recently-used window toggle.
+* `switch-to-mark-or-urgent-or-lru-window` switches to a specific window
+  matched by mark (`con_mark`) unless it's already focused.  In that case, it
+  acts just like `switch-to-urgent-or-lru-window`.  For example, you can assign
+  a "browser" mark to your browser window (using a standard sway `for_window`
+  rule).  Then you can provide "browser" as argument to this command to have a
+  convenient browser <-> last-recently-used window toggle.
 * `switch-window` displays all windows in the order urgent first, then
   last-recently-used, focused last and focuses the selected.
 * `switch-workspace` displays all workspaces in LRU order and switches to the
diff --git a/src/cmds.rs b/src/cmds.rs
index 52096f6..62166eb 100644
--- a/src/cmds.rs
+++ b/src/cmds.rs
@@ -68,9 +68,21 @@ pub enum SwayrCommand {
     /// Switch to next urgent window (if any) or to last recently used window.
     SwitchToUrgentOrLRUWindow,
     /// Switch to the given app (given by app_id or window class) if that's not
-    /// currently focused.  If it is, switch to the next urgent window (if any)
+    /// focused already.  If it is, switch to the next urgent window (if any)
     /// or to last recently used window.
+    ///
+    /// For example, you can provide "firefox" as argument to this command to
+    /// have a convenient firefox <-> last-recently-used window toggle.
     SwitchToAppOrUrgentOrLRUWindow { name: String },
+    /// Switch to the window with the given mark if that's not focused already.
+    /// If it is, switch to the next urgent window (if any) or to last recently
+    /// used window.
+    ///
+    /// For example, you can assign a "browser" mark to your browser window
+    /// (using a standard sway `for_window` rule).  Then you can provide
+    /// "browser" as argument to this command to have a convenient browser <->
+    /// last-recently-used window toggle.
+    SwitchToMarkOrUrgentOrLRUWindow { con_mark: String },
     /// Focus the selected window.
     SwitchWindow,
     /// Switch to the selected workspace.
@@ -259,6 +271,12 @@ pub fn exec_swayr_cmd(args: ExecSwayrCmdArgs) {
                 &*props.read().unwrap(),
             )
         }
+        SwayrCommand::SwitchToMarkOrUrgentOrLRUWindow { con_mark } => {
+            switch_to_mark_or_urgent_or_lru_window(
+                Some(con_mark),
+                &*props.read().unwrap(),
+            )
+        }
         SwayrCommand::SwitchWindow => switch_window(&*props.read().unwrap()),
         SwayrCommand::SwitchWorkspace => {
             switch_workspace(&*props.read().unwrap())
@@ -499,12 +517,31 @@ pub fn switch_to_app_or_urgent_or_lru_window(
     let wins = tree.get_windows();
     let app_win =
         name.and_then(|n| wins.iter().find(|w| w.node.get_app_name() == n));
-    match app_win {
-        Some(app_win) if !app_win.node.is_current() => {
-            focus_window_by_id(app_win.node.id)
-        }
+    focus_win_if_not_focused(app_win, wins.get(0))
+}
+
+pub fn switch_to_mark_or_urgent_or_lru_window(
+    con_mark: Option<&str>,
+    extra_props: &HashMap<i64, t::ExtraProps>,
+) {
+    let root = get_tree(false);
+    let tree = t::get_tree(&root, extra_props);
+    let wins = tree.get_windows();
+    let marked_win = con_mark.and_then(|mark| {
+        wins.iter()
+            .find(|w| w.node.marks.contains(&mark.to_owned()))
+    });
+    focus_win_if_not_focused(marked_win, wins.get(0))
+}
+
+pub fn focus_win_if_not_focused(
+    win: Option<&t::DisplayNode>,
+    other: Option<&t::DisplayNode>,
+) {
+    match win {
+        Some(win) if !win.node.is_current() => focus_window_by_id(win.node.id),
         _ => {
-            if let Some(win) = wins.get(0) {
+            if let Some(win) = other {
                 focus_window_by_id(win.node.id)
             } else {
                 log::debug!("No window to switch to.")