diff --git a/crates/topola-egui/src/painter.rs b/crates/topola-egui/src/painter.rs
index 429aad8..2fc54e4 100644
--- a/crates/topola-egui/src/painter.rs
+++ b/crates/topola-egui/src/painter.rs
@@ -114,4 +114,25 @@ impl<'a> Painter<'a> {
             stroke,
         ));
     }
+
+    pub fn paint_text(
+        &mut self,
+        pos: Point,
+        anchor: egui::Align2,
+        text: &str,
+        color: egui::epaint::Color32,
+    ) {
+        let text = self.ui.painter().fonts(|fonts| {
+            egui::Shape::text(
+                fonts,
+                self.transform
+                    .mul_pos([pos.x() as f32, -pos.y() as f32].into()),
+                anchor,
+                text,
+                egui::FontId::default(),
+                color,
+            )
+        });
+        self.ui.painter().add(text);
+    }
 }
diff --git a/crates/topola-egui/src/viewport.rs b/crates/topola-egui/src/viewport.rs
index 0c7e5bc..71cd668 100644
--- a/crates/topola-egui/src/viewport.rs
+++ b/crates/topola-egui/src/viewport.rs
@@ -11,7 +11,9 @@ use rstar::{Envelope, AABB};
 use topola::{
     autorouter::{
         execution::Command,
-        invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+        invoker::{
+            GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles,
+        },
     },
     board::AccessMesadata,
     drawing::{
@@ -22,6 +24,7 @@ use topola::{
     graph::MakeRef,
     layout::{poly::MakePolygon, via::ViaWeight},
     math::{Circle, RotationSense},
+    router::navmesh::NavvertexIndex,
 };
 
 use crate::{config::Config, menu_bar::MenuBar, painter::Painter, workspace::Workspace};
@@ -265,6 +268,50 @@ impl Viewport {
                                         };
 
                                         painter.paint_edge(from, to, stroke);
+
+                                        if let Some(text) = activity
+                                            .navedge_debug_text((edge.source(), edge.target()))
+                                        {
+                                            painter.paint_text(
+                                                (from + to) / 2.0,
+                                                egui::Align2::LEFT_BOTTOM,
+                                                text,
+                                                egui::Color32::from_rgb(255, 255, 255),
+                                            );
+                                        }
+                                    }
+
+                                    for index in navmesh.graph().node_indices() {
+                                        let navvertex = NavvertexIndex(index);
+                                        if let Some(text) = activity.navvertex_debug_text(navvertex)
+                                        {
+                                            let mut pos = PrimitiveIndex::from(
+                                                navmesh.node_weight(navvertex).unwrap().node,
+                                            )
+                                            .primitive(board.layout().drawing())
+                                            .shape()
+                                            .center();
+
+                                            pos += match navmesh
+                                                .node_weight(navvertex)
+                                                .unwrap()
+                                                .maybe_sense
+                                            {
+                                                Some(RotationSense::Counterclockwise) => {
+                                                    [0.0, 150.0].into()
+                                                }
+                                                Some(RotationSense::Clockwise) => {
+                                                    [-0.0, -150.0].into()
+                                                }
+                                                None => [0.0, 0.0].into(),
+                                            };
+                                            painter.paint_text(
+                                                pos,
+                                                egui::Align2::LEFT_BOTTOM,
+                                                text,
+                                                egui::Color32::from_rgb(255, 255, 255),
+                                            );
+                                        }
                                     }
                                 }
                             }
diff --git a/crates/topola-egui/src/workspace.rs b/crates/topola-egui/src/workspace.rs
index 82d3230..0020760 100644
--- a/crates/topola-egui/src/workspace.rs
+++ b/crates/topola-egui/src/workspace.rs
@@ -19,7 +19,7 @@ use crate::{
     translator::Translator,
 };
 
-/// A loaded design and associated structures
+/// A loaded design and associated structures.
 pub struct Workspace {
     pub design: SpecctraDesign,
     pub appearance_panel: AppearancePanel,
@@ -50,7 +50,7 @@ impl Workspace {
             interactor: Interactor::new(board).map_err(|err| {
                 format!(
                     "{}; {}",
-                    tr.text("tr-error_unable-to-initialize-overlay"),
+                    tr.text("tr-error-unable-to-initialize-overlay"),
                     err
                 )
             })?,
diff --git a/src/autorouter/autoroute.rs b/src/autorouter/autoroute.rs
index 4a1a0f9..2257a70 100644
--- a/src/autorouter/autoroute.rs
+++ b/src/autorouter/autoroute.rs
@@ -14,12 +14,16 @@ use crate::{
     drawing::{band::BandTermsegIndex, graph::PrimitiveIndex, Collect},
     geometry::primitive::PrimitiveShape,
     layout::LayoutEdit,
-    router::{navcord::NavcordStepper, navmesh::Navmesh, RouteStepper, Router},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+        RouteStepper, Router,
+    },
     stepper::Step,
 };
 
 use super::{
-    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles},
     Autorouter, AutorouterError, AutorouterOptions,
 };
 
@@ -159,29 +163,37 @@ impl<M: AccessMesadata> Step<Autorouter<M>, Option<LayoutEdit>, AutorouteContinu
 }
 
 impl GetMaybeNavmesh for AutorouteExecutionStepper {
-    /// Retrieves an optional reference to the navigation mesh from the current route.
     fn maybe_navmesh(&self) -> Option<&Navmesh> {
         self.route.as_ref().map(|route| route.navmesh())
     }
 }
 
 impl GetMaybeNavcord for AutorouteExecutionStepper {
-    /// Retrieves an optional reference to the navcord from the current route.
     fn maybe_navcord(&self) -> Option<&NavcordStepper> {
         self.route.as_ref().map(|route| route.navcord())
     }
 }
 
 impl GetGhosts for AutorouteExecutionStepper {
-    /// Retrieves ghost shapes from the current route.
     fn ghosts(&self) -> &[PrimitiveShape] {
         self.route.as_ref().map_or(&[], |route| route.ghosts())
     }
 }
 
 impl GetObstacles for AutorouteExecutionStepper {
-    /// Retrieves obstacles encountered during routing.
     fn obstacles(&self) -> &[PrimitiveIndex] {
         self.route.as_ref().map_or(&[], |route| route.obstacles())
     }
 }
+
+impl GetNavmeshDebugTexts for AutorouteExecutionStepper {
+    fn navvertex_debug_text(&self, _navvertex: NavvertexIndex) -> Option<&str> {
+        // Add debug text here.
+        None
+    }
+
+    fn navedge_debug_text(&self, _navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        // Add debug text here.
+        None
+    }
+}
diff --git a/src/autorouter/compare_detours.rs b/src/autorouter/compare_detours.rs
index 42f919a..6a410a6 100644
--- a/src/autorouter/compare_detours.rs
+++ b/src/autorouter/compare_detours.rs
@@ -14,13 +14,17 @@ use crate::{
     drawing::graph::PrimitiveIndex,
     geometry::{primitive::PrimitiveShape, shape::MeasureLength},
     graph::MakeRef,
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
     stepper::Step,
 };
 
 use super::{
     autoroute::{AutorouteContinueStatus, AutorouteExecutionStepper},
-    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles},
+    remove_bands::RemoveBandsExecutionStepper,
     Autorouter, AutorouterError, AutorouterOptions,
 };
 
@@ -123,3 +127,13 @@ impl GetObstacles for CompareDetoursExecutionStepper {
         self.autoroute.obstacles()
     }
 }
+
+impl GetNavmeshDebugTexts for CompareDetoursExecutionStepper {
+    fn navvertex_debug_text(&self, _navvertex: NavvertexIndex) -> Option<&str> {
+        None
+    }
+
+    fn navedge_debug_text(&self, _navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        None
+    }
+}
diff --git a/src/autorouter/execution.rs b/src/autorouter/execution.rs
index ae323e9..e59297b 100644
--- a/src/autorouter/execution.rs
+++ b/src/autorouter/execution.rs
@@ -35,7 +35,13 @@ pub enum Command {
     MeasureLength(BandSelection),
 }
 
-#[enum_dispatch(GetMaybeNavmesh, GetMaybeNavcord, GetGhosts, GetObstacles)]
+#[enum_dispatch(
+    GetMaybeNavmesh,
+    GetMaybeNavcord,
+    GetGhosts,
+    GetObstacles,
+    GetNavmeshDebugTexts
+)]
 pub enum ExecutionStepper {
     Autoroute(AutorouteExecutionStepper),
     PlaceVia(PlaceViaExecutionStepper),
diff --git a/src/autorouter/invoker.rs b/src/autorouter/invoker.rs
index 051fe13..0dc0a7d 100644
--- a/src/autorouter/invoker.rs
+++ b/src/autorouter/invoker.rs
@@ -15,7 +15,10 @@ use crate::{
     board::AccessMesadata,
     drawing::graph::PrimitiveIndex,
     geometry::{edit::ApplyGeometryEdit, primitive::PrimitiveShape},
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
     stepper::Step,
 };
 
@@ -31,63 +34,59 @@ use super::{
 };
 
 #[enum_dispatch]
-/// Getter trait to obtain Navigation Mesh
-///
-/// Navigation Mesh is possible routes between
-/// two points
+/// Trait for getting the navmesh to display it on the debug overlay.
 pub trait GetMaybeNavmesh {
-    /// Returns Navigation Mesh if possible
     fn maybe_navmesh(&self) -> Option<&Navmesh>;
 }
 
 #[enum_dispatch]
-/// Getter for Navigation Cord
-///
-/// Navigation Cord is the possible path of
-/// ongoing autorouting process
+/// Trait for getting the navcord to display it on the debug overlay.
 pub trait GetMaybeNavcord {
-    /// Gets the Navigation Cord if possible
     fn maybe_navcord(&self) -> Option<&NavcordStepper>;
 }
 
 #[enum_dispatch]
-/// Requires Ghosts implementations
-///
-/// Ghosts are possible shapes of routing
-/// bands
+/// Trait for getting ghosts to display on the debug overlay. Ghosts are the
+/// shapes that Topola attempted to create but failed due to them infringing on
+/// other shapes.
 pub trait GetGhosts {
-    /// Retrieves the ghosts associated with the execution.
     fn ghosts(&self) -> &[PrimitiveShape];
 }
 
 #[enum_dispatch]
-/// Getter for the Obstacles
-///
-/// Obstacles are shapes of existing bands
-/// to be avoided by the new band
+/// Trait for getting the obstacles that prevented Topola from creating
+/// new objects (the shapes of these objects can be obtained with the above
+/// `GetGhosts` trait), for the purpose of displaying these obstacles on the
+/// debug overlay.
 pub trait GetObstacles {
-    /// Returns possible Obstacles
     fn obstacles(&self) -> &[PrimitiveIndex];
 }
 
-/// Error types that can occur during the invocation of commands
+#[enum_dispatch]
+/// Trait for getting text strings with debug information attached to navmesh
+/// edges and vertices.
+pub trait GetNavmeshDebugTexts {
+    fn navvertex_debug_text(&self, navvertex: NavvertexIndex) -> Option<&str>;
+    fn navedge_debug_text(&self, navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str>;
+}
+
+/// Error types that can occur during the invocation of commands.
 #[derive(Error, Debug, Clone)]
 pub enum InvokerError {
-    /// Wraps errors related to command history operations
+    /// Wraps errors related to command history operations.
     #[error(transparent)]
     History(#[from] HistoryError),
 
-    /// Wraps errors related to autorouter operations
+    /// Wraps errors related to autorouter operations.
     #[error(transparent)]
     Autorouter(#[from] AutorouterError),
 }
 
 #[derive(Getters, Dissolve)]
-/// Structure that manages the execution and history of commands within the autorouting system
 pub struct Invoker<M> {
-    /// Instance for executing desired autorouting commands
+    /// Instance for executing desired autorouting commands.
     pub(super) autorouter: Autorouter<M>,
-    /// History of executed commands
+    /// History of executed commands.
     pub(super) history: History,
     /// Currently ongoing command type.
     pub(super) ongoing_command: Option<Command>,
@@ -109,10 +108,10 @@ impl<M: AccessMesadata> Invoker<M> {
     }
 
     //#[debug_requires(self.ongoing_command.is_none())]
-    /// Executes a command, managing the command status and history
+    /// Executes a command, managing the command status and history.
     ///
     /// This function is used to pass the [`Command`] to [`Invoker::execute_stepper`]
-    /// function, and control its execution status
+    /// function, and control its execution status.
     pub fn execute(&mut self, command: Command) -> Result<(), InvokerError> {
         let mut execute = self.execute_stepper(command)?;
 
@@ -127,9 +126,9 @@ impl<M: AccessMesadata> Invoker<M> {
     }
 
     #[debug_requires(self.ongoing_command.is_none())]
-    /// Pass given command to be executed
+    /// Pass given command to be executed.
     ///
-    /// Function used to set given [`Command`] to ongoing state, dispatch and execute it
+    /// Function used to set given [`Command`] to ongoing state, dispatch and execute it.
     pub fn execute_stepper(&mut self, command: Command) -> Result<ExecutionStepper, InvokerError> {
         let execute = self.dispatch_command(&command);
         self.ongoing_command = Some(command);
@@ -174,7 +173,7 @@ impl<M: AccessMesadata> Invoker<M> {
     }
 
     #[debug_requires(self.ongoing_command.is_none())]
-    /// Undo last command
+    /// Undo last command.
     pub fn undo(&mut self) -> Result<(), InvokerError> {
         let last_done = self.history.last_done()?;
 
@@ -186,7 +185,7 @@ impl<M: AccessMesadata> Invoker<M> {
     }
 
     //#[debug_requires(self.ongoing_command.is_none())]
-    /// Redo last command
+    /// Redo last command.
     pub fn redo(&mut self) -> Result<(), InvokerError> {
         let last_undone = self.history.last_undone()?;
 
@@ -198,7 +197,7 @@ impl<M: AccessMesadata> Invoker<M> {
     }
 
     #[debug_requires(self.ongoing_command.is_none())]
-    /// Replay last command
+    /// Replay last command.
     pub fn replay(&mut self, history: History) {
         let (done, undone) = history.dissolve();
 
diff --git a/src/autorouter/measure_length.rs b/src/autorouter/measure_length.rs
index 07425eb..59cced3 100644
--- a/src/autorouter/measure_length.rs
+++ b/src/autorouter/measure_length.rs
@@ -11,11 +11,15 @@ use crate::{
     drawing::graph::PrimitiveIndex,
     geometry::{primitive::PrimitiveShape, shape::MeasureLength as MeasureLengthTrait},
     graph::MakeRef,
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
 };
 
 use super::{
-    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles},
+    remove_bands::RemoveBandsExecutionStepper,
     selection::BandSelection,
     Autorouter, AutorouterError,
 };
@@ -78,3 +82,13 @@ impl GetObstacles for MeasureLengthExecutionStepper {
         &[]
     }
 }
+
+impl GetNavmeshDebugTexts for MeasureLengthExecutionStepper {
+    fn navvertex_debug_text(&self, _navvertex: NavvertexIndex) -> Option<&str> {
+        None
+    }
+
+    fn navedge_debug_text(&self, _navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        None
+    }
+}
diff --git a/src/autorouter/place_via.rs b/src/autorouter/place_via.rs
index 9425cba..86eb074 100644
--- a/src/autorouter/place_via.rs
+++ b/src/autorouter/place_via.rs
@@ -11,11 +11,14 @@ use crate::{
     drawing::graph::PrimitiveIndex,
     geometry::primitive::PrimitiveShape,
     layout::{via::ViaWeight, LayoutEdit},
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
 };
 
 use super::{
-    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles},
     Autorouter, AutorouterError,
 };
 
@@ -75,3 +78,13 @@ impl GetObstacles for PlaceViaExecutionStepper {
         &[]
     }
 }
+
+impl GetNavmeshDebugTexts for PlaceViaExecutionStepper {
+    fn navvertex_debug_text(&self, _navvertex: NavvertexIndex) -> Option<&str> {
+        None
+    }
+
+    fn navedge_debug_text(&self, _navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        None
+    }
+}
diff --git a/src/autorouter/remove_bands.rs b/src/autorouter/remove_bands.rs
index 7d201ec..32b4d64 100644
--- a/src/autorouter/remove_bands.rs
+++ b/src/autorouter/remove_bands.rs
@@ -9,11 +9,14 @@ use crate::{
     drawing::graph::PrimitiveIndex,
     geometry::primitive::PrimitiveShape,
     layout::LayoutEdit,
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
 };
 
 use super::{
-    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+    invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles},
     selection::BandSelection,
     Autorouter, AutorouterError,
 };
@@ -74,3 +77,13 @@ impl GetObstacles for RemoveBandsExecutionStepper {
         &[]
     }
 }
+
+impl GetNavmeshDebugTexts for RemoveBandsExecutionStepper {
+    fn navvertex_debug_text(&self, _navvertex: NavvertexIndex) -> Option<&str> {
+        None
+    }
+
+    fn navedge_debug_text(&self, _navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        None
+    }
+}
diff --git a/src/interactor/activity.rs b/src/interactor/activity.rs
index ba4a8c7..5647bd2 100644
--- a/src/interactor/activity.rs
+++ b/src/interactor/activity.rs
@@ -12,14 +12,18 @@ use crate::{
     autorouter::{
         execution::ExecutionStepper,
         invoker::{
-            GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles, Invoker, InvokerError,
+            GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles,
+            Invoker, InvokerError,
         },
     },
     board::AccessMesadata,
     drawing::graph::PrimitiveIndex,
     geometry::primitive::PrimitiveShape,
     interactor::interaction::{InteractionError, InteractionStepper},
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
     stepper::{Abort, Step},
 };
 
@@ -44,7 +48,13 @@ pub enum ActivityError {
 }
 
 /// An activity is either an interaction or an execution
-#[enum_dispatch(GetMaybeNavmesh, GetMaybeNavcord, GetGhosts, GetObstacles)]
+#[enum_dispatch(
+    GetMaybeNavmesh,
+    GetMaybeNavcord,
+    GetGhosts,
+    GetObstacles,
+    GetNavmeshDebugTexts
+)]
 pub enum ActivityStepper {
     Interaction(InteractionStepper),
     Execution(ExecutionStepper),
@@ -137,3 +147,13 @@ impl GetObstacles for ActivityStepperWithStatus {
         self.activity.obstacles()
     }
 }
+
+impl GetNavmeshDebugTexts for ActivityStepperWithStatus {
+    fn navvertex_debug_text(&self, navvertex: NavvertexIndex) -> Option<&str> {
+        self.activity.navvertex_debug_text(navvertex)
+    }
+
+    fn navedge_debug_text(&self, navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        self.activity.navedge_debug_text(navedge)
+    }
+}
diff --git a/src/interactor/interaction.rs b/src/interactor/interaction.rs
index 9578d94..8b6946e 100644
--- a/src/interactor/interaction.rs
+++ b/src/interactor/interaction.rs
@@ -7,11 +7,16 @@ use std::ops::ControlFlow;
 use thiserror::Error;
 
 use crate::{
-    autorouter::invoker::{GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetObstacles},
+    autorouter::invoker::{
+        GetGhosts, GetMaybeNavcord, GetMaybeNavmesh, GetNavmeshDebugTexts, GetObstacles,
+    },
     board::AccessMesadata,
     drawing::graph::PrimitiveIndex,
     geometry::primitive::PrimitiveShape,
-    router::{navcord::NavcordStepper, navmesh::Navmesh},
+    router::{
+        navcord::NavcordStepper,
+        navmesh::{Navmesh, NavvertexIndex},
+    },
     stepper::{Abort, Step},
 };
 
@@ -70,3 +75,13 @@ impl GetObstacles for InteractionStepper {
         todo!()
     }
 }
+
+impl GetNavmeshDebugTexts for InteractionStepper {
+    fn navvertex_debug_text(&self, navvertex: NavvertexIndex) -> Option<&str> {
+        todo!()
+    }
+
+    fn navedge_debug_text(&self, navedge: (NavvertexIndex, NavvertexIndex)) -> Option<&str> {
+        todo!()
+    }
+}
diff --git a/src/router/navmesh.rs b/src/router/navmesh.rs
index e07a333..c11433e 100644
--- a/src/router/navmesh.rs
+++ b/src/router/navmesh.rs
@@ -39,7 +39,7 @@ use crate::{
 use super::RouterOptions;
 
 #[derive(Clone, Copy, Eq, Ord, PartialEq, PartialOrd)]
-pub struct NavvertexIndex(NodeIndex<usize>);
+pub struct NavvertexIndex(pub NodeIndex<usize>);
 
 impl core::fmt::Debug for NavvertexIndex {
     fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
@@ -152,7 +152,7 @@ pub enum NavmeshError {
 /// when going directly to destination) on the layout for each leap and
 /// along-edge crossing.
 ///
-/// The name "navmesh" is a shortening of "navigation mesh".
+/// The name "navmesh" is a blend of "navigation mesh".
 #[derive(Debug, Clone)]
 pub struct Navmesh {
     graph: UnGraph<NavvertexWeight, (), usize>,