diff --git a/crates/doc/src/entity/layout.rs b/crates/doc/src/entity/layout.rs
index 802cbf77f..e63ba6c91 100644
--- a/crates/doc/src/entity/layout.rs
+++ b/crates/doc/src/entity/layout.rs
@@ -1,3 +1,5 @@
+use cadcraft_geom::Mat3;
+
 use super::common::Handle;
 use super::{Color, Deserialize, Serialize, Vec2, Vec3, standard, yes};
 
diff --git a/crates/engine/src/session/interactive.rs b/crates/engine/src/session/interactive.rs
index a68993d64..4248357b0 100644
--- a/crates/engine/src/session/interactive.rs
+++ b/crates/engine/src/session/interactive.rs
@@ -1,3 +1,5 @@
+use crate::DisplayOnly;
+
 use super::{
     Arc, Bounds2, Drag, Drawing, EngineError, Entity, Handle, Input, PendingWindow, Prompt, Result, Running, Session, Snapshot, Step, Value, Vec2,
     assoc, cmd, find_command, guard, pointmod, select, snap, sysvars,
diff --git a/crates/render/src/lib.rs b/crates/render/src/lib.rs
index 5b9dc83a1..ac31ee5e0 100644
--- a/crates/render/src/lib.rs
+++ b/crates/render/src/lib.rs
@@ -316,7 +316,7 @@ pub use pipeline::{Options, build, build_entities, build_plot};
 use props::{default_lineweight, resolve_common};
 use text_entity::text_style;
 pub use text_entity::{layout_mtext_entity, place_text_entity, text_align};
-pub use viewports::{viewport_clip, viewport_content};
+pub use viewports::{clip_list, viewport_clip, viewport_content};
 
 #[cfg(test)]
 mod tests;
diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index e1c964bc0..6899de3d2 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -304,7 +304,11 @@ fn handle_scroll_zoom(app: &mut CadApp, ui: &mut egui::Ui, nav: &Navigation<'_>,
         && let Ok(st) = app.session.state_mut()
     {
         let view = st.view();
-        st.set_view_quiet(cadcraft_engine::View { center: view.center - nav.xf.screen_delta_to_world(p.scroll), height: view.height, twist: view.twist });
+        st.set_view_quiet(cadcraft_engine::View {
+            center: view.center - nav.xf.screen_delta_to_world(p.scroll),
+            height: view.height,
+            twist: view.twist,
+        });
     }
     let opts = ui.ctx().options(|o| o.input_options);
     let wheel = ui.input(|i| wheel_zoom_points(&i.raw.events, &opts, nav.rect.height()));
@@ -339,7 +343,11 @@ fn handle_button_navigation(app: &mut CadApp, nav: &Navigation<'_>, inside: bool
             let delta = at - last;
             if let Ok(st) = app.session.state_mut() {
                 let view = st.view();
-                st.set_view_quiet(cadcraft_engine::View { center: view.center - nav.xf.screen_delta_to_world(delta), height: view.height, twist: view.twist });
+                st.set_view_quiet(cadcraft_engine::View {
+                    center: view.center - nav.xf.screen_delta_to_world(delta),
+                    height: view.height,
+                    twist: view.twist,
+                });
             }
         }
         app.canvas.pan_last = Some(at);
diff --git a/crates/ui-egui/src/canvas/draw.rs b/crates/ui-egui/src/canvas/draw.rs
index 465740b62..b98dea92a 100644
--- a/crates/ui-egui/src/canvas/draw.rs
+++ b/crates/ui-egui/src/canvas/draw.rs
@@ -1,5 +1,5 @@
 use super::list::preview_options;
-use super::{Bounds2, CanvasState, Color32, DisplayList, Handle, Kind, ListKey, Pos2, Rect, Rgb, Shape, Stroke, Vec2, Xf, vec2};
+use super::{Bounds2, CanvasState, Color32, DisplayList, Handle, Kind, ListKey, Mat3, Pos2, Rect, Rgb, Shape, Stroke, Vec2, Xf, vec2};
 
 fn color32(c: Rgb) -> Color32 {
     Color32::from_rgb(c.0, c.1, c.2)
diff --git a/crates/ui-egui/src/canvas/grid.rs b/crates/ui-egui/src/canvas/grid.rs
index 2c43de297..7664b9ffb 100644
--- a/crates/ui-egui/src/canvas/grid.rs
+++ b/crates/ui-egui/src/canvas/grid.rs
@@ -1,4 +1,4 @@
-use super::{Bounds2, CadApp, Shape, Stroke, Tokens, Vec2, Xf, pos2};
+use super::{Bounds2, CadApp, Shape, Stroke, Tokens, Vec2, Xf};
 
 /// Grid spacing adapted to the zoom: multiply the unit until lines are at least `min_px` apart.
 fn adaptive(unit: f64, scale: f64, min_px: f64) -> f64 {
diff --git a/crates/ui-egui/src/canvas/list.rs b/crates/ui-egui/src/canvas/list.rs
index a036ab6bc..2a975bbce 100644
--- a/crates/ui-egui/src/canvas/list.rs
+++ b/crates/ui-egui/src/canvas/list.rs
@@ -1,5 +1,5 @@
 use super::viewport::{split_viewport, stencil_clip};
-use super::{Bounds2, CadApp, DisplayList, Handle, ListKey, Rgb, Tokens, Xf, rebuild, same_content};
+use super::{Bounds2, CadApp, DisplayList, Handle, ListKey, Rgb, Tokens, Vec2, Xf, rebuild, same_content};
 
 /// Primitives of `list` sorted by entity handle, built on the first highlight after each list
 /// rebuild. Highlighting the hovered entity used to scan every primitive on every frame: ~2.5 ms
diff --git a/crates/ui-egui/src/canvas/viewport.rs b/crates/ui-egui/src/canvas/viewport.rs
index 668017816..4a7f79001 100644
--- a/crates/ui-egui/src/canvas/viewport.rs
+++ b/crates/ui-egui/src/canvas/viewport.rs
@@ -1,5 +1,5 @@
 use super::draw::draw_list;
-use super::{Bounds2, CadApp, DisplayList, Handle, Kind, Rect, Rgb, Vec2, Xf};
+use super::{Bounds2, CadApp, DisplayList, Handle, Kind, Mat3, Rect, Rgb, Vec2, Xf};
 
 /// The active MSPACE viewport when its contents are drawn apart from the layout's list (see
 /// [`VpContent`]), with its clip outline when it is clipped. A clipped viewport is clipped with