diff --git a/docs/AUTOMATION.md b/docs/AUTOMATION.md
index d302a1583..a9078477f 100644
--- a/docs/AUTOMATION.md
+++ b/docs/AUTOMATION.md
@@ -165,12 +165,16 @@ user's motion settings, timed in demo time.
 | `fizzy.dialog:<title>:<label>` | a button in a dialog: its footer's, or one drawn with `core.dialogs.bodyButton` (`fizzy.dialog:About Fizzy:Close`) |
 | `history.line:<abs path>` | a document's transport line, from its first stop to its last, while the transport shows: `x` is that fraction of its history (`x = 0` before any change) |
 | `history.back:<abs path>`, `history.forward:<abs path>` | its undo and redo buttons |
+| `history.grip:<abs path>` | the grip at the foot of a pane with history, while its transport is hidden: a press grows the transport at once (a rest on it grows it after a moment) |
+| `history.export:<abs path>`, `history.collapse:<abs path>` | the transport's export button, and the chevron that sends it back into the grip |
 | `fizzy.window:main` | the main window |
 | `fizzy.window:dialog:<title>`, `fizzy.window:float:<title>`, `fizzy.window:menu` | an OS window of the app's own: a dialog's, a popped-out view's, a menu's (a second of the same name gets `:2`) |
 | `region:<name>` | a layout region (`Main`, `Panel`, …) |
+| `float-header:<place>`, `float-close:<place>` | a float's header, to carry it by, and its close button: `float-close:Float 1` |
 | `picker:<view id>` | a view's card in a place's picker |
 | `picker.mode:one`, `picker.mode:many` | the picker's Single / Multiple |
 | `picker.action:split`, `:clear`, `:defaults`, `:remove` | the picker's actions, each only while it can be pressed (a dimmed Clear has no name) |
+| `picker.empty` | the header of a place with nothing in it |
 | `picker.split:vertical`, `picker.split:horizontal` | the rows of the picker's Split menu |
 
 A demo's files live under its keyframe's `root`, so a path is `demo://tour/src/main.zig`.
diff --git a/src/editor/demos/catalog.zig b/src/editor/demos/catalog.zig
index 361ff244b..51b5c581f 100644
--- a/src/editor/demos/catalog.zig
+++ b/src/editor/demos/catalog.zig
@@ -9,6 +9,7 @@
 //! the site's copies of the app serve beside themselves (`scripts/demos.zig`).
 const std = @import("std");
 const Script = @import("tape").Script;
+const Tape = @import("tape").Tape;
 
 pub const Entry = struct {
     /// Stable id: the command's suffix, the web's `?demo=`, the mount `demo://<name>`.
@@ -66,6 +67,36 @@ pub fn aboutWriting(s: *Script, rel: []const u8) !Script.CaptionOptions {
     return .{ .near = try end(s, rel), .clear = clear };
 }
 
+/// A place by name (`Sidebar`, `Main`, `Float 1`): the whole of it.
+pub fn place(s: *Script, name: []const u8) ![]const u8 {
+    return s.print("region:{s}", .{name});
+}
+
+/// Where a place's corner button is, `inset` points in from the top-right of the place's region:
+/// 26 for the sidebar, 34 for a card with padding round its contents (Main, the panel). The button
+/// shows only while the pointer is on the corner, so `cornerButton` comes at it from the corner.
+pub fn corner(s: *Script, name: []const u8, inset: f32) !Tape.Target {
+    return .{ .tag = try place(s, name), .x = 1, .y = 0, .dx = -inset, .dy = inset };
+}
+
+/// Bring a place's corner button up and rest on it: from the very corner, where it starts to
+/// show, then in onto it.
+pub fn cornerButton(s: *Script, name: []const u8, inset: f32) !void {
+    try s.moveTo(.{ .tag = try place(s, name), .x = 1, .y = 0, .dx = -3, .dy = 3 }, .{ .ms = 500 });
+    try s.moveTo(try corner(s, name, inset), .{ .ms = 200 });
+}
+
+/// The grip at the foot of `rel`'s pane, shown once it has history: holding on it grows the
+/// history's bar.
+pub fn historyGrip(s: *Script, rel: []const u8) ![]const u8 {
+    return s.print("history.grip:{s}/{s}", .{ s.root, rel });
+}
+
+/// The line of `rel`'s history in its bar: `x` 0 is before the first change, 1 the last.
+pub fn historyLine(s: *Script, rel: []const u8) ![]const u8 {
+    return s.print("history.line:{s}/{s}", .{ s.root, rel });
+}
+
 /// The tab for `rel`.
 pub fn tab(s: *Script, rel: []const u8) ![]const u8 {
     return s.print("workbench.tab:{s}/{s}", .{ s.root, rel });
diff --git a/src/editor/demos/tour.zig b/src/editor/demos/tour.zig
index 57e76820b..19b0c722d 100644
--- a/src/editor/demos/tour.zig
+++ b/src/editor/demos/tour.zig
@@ -1,5 +1,11 @@
-//! A tour of fizzy: the explorer, editing, the command palette and a live markdown preview — a
-//! minute and a half, in chapters a viewer can jump between.
+//! A tour of fizzy: tabs that go where they are dragged, places that split and views that float,
+//! the window's materials, the plugins everything is made of, and the history kept of every change
+//! — about a minute, in chapters a viewer can jump between (the guides view lists them).
+//!
+//! Each chapter that rearranges the window opens on a keyframe of its own: a snapshot holds the
+//! documents and settings but not the layout, so a seek back across a split or a float lands on a
+//! cut rather than on a window still arranged the later way.
+const Tape = @import("tape").Tape;
 const Script = @import("tape").Script;
 const catalog = @import("catalog.zig");
 
@@ -7,11 +13,7 @@ const readme =
     \\# Welcome to fizzy
     \\
     \\A small, fast editor built out of plugins. This folder lives in
-    \\memory: it belongs to the demo, and nothing in it touches your disk.
-    \\
-    \\- Files open from the explorer on the left
-    \\- The command palette runs anything
-    \\- Markdown previews as you type
+    \\memory: it belongs to the tour, and nothing in it touches your disk.
     \\
 ;
 
@@ -27,91 +29,117 @@ const main_zig =
 const ideas =
     \\# Ideas
     \\
-    \\- [x] a demo that plays itself
-    \\- [ ] a demo that writes itself
+    \\- [x] a tour that plays itself
+    \\- [ ] a tour you can take over
     \\
 ;
 
-pub fn build(s: *Script) !void {
+const files = [_]Tape.File{
+    .{ .path = "README.md", .text = readme },
+    .{ .path = "src/main.zig", .text = main_zig },
+    .{ .path = "notes/ideas.md", .text = ideas },
+};
+
+/// The tour's folder, cut to: its three files open as tabs, README in front.
+fn scene(s: *Script, layout: Tape.Keyframe.Layout) !void {
     try s.keyframe(.{
         .root = "demo://tour",
-        .files = &.{
-            .{ .path = "README.md", .text = readme },
-            .{ .path = "src/main.zig", .text = main_zig },
-            .{ .path = "notes/ideas.md", .text = ideas },
-        },
-        // What the script types assumes an editor that closes brackets, and a preview beside the
-        // markdown rather than over it.
-        .settings = &.{
-            .{ .owner = "text", .key = "auto_close_brackets", .value = "true" },
-            .{ .owner = "markdown", .key = "default_md_view", .value = ".split" },
-        },
+        .files = &files,
+        .open = &.{ "src/main.zig", "notes/ideas.md", "README.md" },
+        .layout = layout,
+        // A preview beside the markdown rather than over it.
+        .settings = &.{.{ .owner = "markdown", .key = "default_md_view", .value = ".split" }},
     });
     s.home = catalog.documents;
+}
+
+pub fn build(s: *Script) !void {
+    try scene(s, .focused);
 
     try s.chapter("Welcome");
-    try s.caption("This is fizzy itself, driving its own controls. Click, scroll or press a key at any time to take over; press play to carry on.", .{
+    try s.caption("This is fizzy itself, played by a tape. Click anywhere to take over, and press play to carry on.", .{
         .title = "A tour of fizzy",
         .place = .middle,
-        .ms = 8500,
-        .hold = true,
+        .ms = 4000,
     });
+    s.pause(3600);
 
-    // From here, each caption is a callout beside what the pointer does while it shows.
-    try s.chapter("The explorer");
-    try s.caption("The project folder is in the explorer, a click away on the rail.", .{});
-    s.pause(1600);
-    try s.click(.{ .tag = catalog.files_icon }, .{});
-    try s.caption("Folders open with a click\u{2026}", .{});
-    s.pause(900);
-    try s.click(.{ .tag = try catalog.file(s, "src") }, .{});
-    try s.caption("\u{2026}and files open in tabs.", .{});
-    s.pause(900);
-    try s.click(.{ .tag = try catalog.file(s, "src/main.zig") }, .{});
+    try s.chapter("Tabs");
+    try s.caption("Tabs go where you drag them.", .{ .near = try catalog.tab(s, "README.md") });
+    try s.drag(.{ .tag = try catalog.tab(s, "README.md") }, .{ .tag = try catalog.tab(s, "src/main.zig"), .x = 0.2 }, .{});
+    try s.caption("Drop one on the editor's edge, and it opens beside the others.", .{});
+    try s.drag(.{ .tag = try catalog.tab(s, "src/main.zig") }, .{ .tag = catalog.documents, .dx = 132 }, .{});
     try s.waitFor(try catalog.editor(s, "src/main.zig"), .{});
-    s.pause(1200);
-    try s.caption("Put the explorer away again, and the editor has the room.", .{});
     s.pause(900);
-    try s.click(.{ .tag = catalog.files_icon }, .{});
-    s.pause(2000);
 
-    try s.chapter("Editing");
-    try s.caption("Typing is typing: brackets close themselves, and Enter keeps the indent.", try catalog.aboutWriting(s, "src/main.zig"));
-    // Where the new lines will go: the end of the file.
-    try s.click(.{ .tag = try catalog.end(s, "src/main.zig") }, .{});
-    try s.typeText("\npub fn greet(name: []const u8) void {\nstd.debug.print(\"hi, {s}\\n\", .{name});", .{});
-    s.pause(1400);
+    try s.chapter("Places");
+    try scene(s, .reset);
+    try s.caption("Every place has a corner. Its button chooses what the place shows…", .{});
+    try catalog.cornerButton(s, "Sidebar", 26);
+    try s.click(try catalog.corner(s, "Sidebar", 26), .{ .move_ms = 0 });
+    try s.waitFor("picker.action:split", .{});
+    s.pause(1200);
+    try s.caption("…and splits it, for two views side by side.", .{ .near = "picker.action:split" });
+    try s.click(.{ .tag = "picker.action:split" }, .{});
+    try s.click(.{ .tag = "picker.split:horizontal" }, .{});
+    s.pause(1200);
 
-    try s.chapter("The command palette");
-    try s.caption("Every action is a command, and the palette finds commands by name.", .{});
-    s.pause(2000);
-    try s.command("fizzy.commandPalette");
-    try s.waitFor(catalog.palette, .{});
-    try s.typeText("toggle explorer", .{});
-    s.pause(400);
-    try s.key("enter");
-    try s.caption("Enter runs it, and the explorer is back\u{2026}", .{});
-    s.pause(2400);
-    try s.caption("\u{2026}and its shortcut puts it away again.", .{});
-    s.pause(800);
-    try s.command("fizzy.toggleExplorer");
-    s.pause(2000);
+    try s.chapter("Floats");
+    try scene(s, .reset);
+    try s.caption("Carry a view from its corner and drop it on the middle of its own place: it floats.", .{});
+    try catalog.cornerButton(s, "Sidebar", 26);
+    try s.drag(try catalog.corner(s, "Sidebar", 26), .{ .tag = try catalog.place(s, "Sidebar") }, .{ .ms = 900 });
+    try s.waitFor(try catalog.place(s, "Float 1"), .{});
+    try s.caption("A float goes wherever you carry it by its header.", .{ .near = "float-header:Float 1" });
+    try s.drag(.{ .tag = "float-header:Float 1" }, .{ .tag = catalog.documents, .x = 0.45, .y = 0.15 }, .{ .ms = 1000 });
+    s.pause(600);
 
-    try s.chapter("Markdown");
-    try s.caption("Markdown opens beside its preview\u{2026}", .{});
+    try s.chapter("Materials");
+    try s.commandWith("fizzy.windowMaterial", .{ .kind = "liquid" });
+    try s.caption("Over the code you can see what it is made of. The window, its floats, menus and dialogs are one material, Liquid Glass here…", .{ .near = "float-header:Float 1" });
+    s.pause(1800);
+    try s.caption("…or frosted…", .{ .near = "float-header:Float 1" });
+    try s.commandWith("fizzy.windowMaterial", .{ .kind = "frost" });
+    s.pause(1400);
+    try s.caption("…blurred…", .{ .near = "float-header:Float 1" });
+    try s.commandWith("fizzy.windowMaterial", .{ .kind = "blur" });
+    s.pause(1400);
+    try s.caption("…clear, or opaque. Settings › Window keeps your choice.", .{ .near = "float-header:Float 1" });
+    try s.commandWith("fizzy.windowMaterial", .{ .kind = "transparent" });
+    s.pause(1200);
+    try s.commandWith("fizzy.windowMaterial", .{ .kind = "none" });
+    s.pause(1200);
+    try s.commandWith("fizzy.windowMaterial", .{ .kind = "liquid" });
+    try s.caption("Close a float, and its views go back where they came from.", .{ .near = "float-close:Float 1" });
+    try s.click(.{ .tag = "float-close:Float 1" }, .{});
+    try s.waitGone(try catalog.place(s, "Float 1"), .{});
     s.pause(600);
-    try catalog.openFile(s, "README.md");
-    s.pause(800);
-    try s.caption("\u{2026}which follows every keystroke.", try catalog.aboutWriting(s, "README.md"));
+
+    try s.chapter("Plugins");
+    try s.caption("Everything you have seen is a plugin: the files, the editor, the previews, these guides. More are in the store.", .{ .near = "fizzy.rail:fizzy.store" });
+    try s.click(.{ .tag = "fizzy.rail:fizzy.store" }, .{});
+    s.pause(2600);
+
+    try s.chapter("History");
+    try scene(s, .focused);
+    try s.caption("Every change is kept, a step at a time.", try catalog.aboutWriting(s, "README.md"));
     try s.click(.{ .tag = try catalog.end(s, "README.md") }, .{});
-    try s.typeText("\n## Your turn\n\nPress **play** to watch again, or click anywhere and make it yours.\n", .{ .cps = 18 });
-    s.pause(2400);
+    try s.typeText("\n## History\n\nEvery keystroke is a step you can go back to.\n", .{ .cps = 20 });
+    s.pause(500);
+    try s.caption("The grip at the foot of the page fills as the history grows, full at its limit (Settings › History)…", .{ .near = try catalog.historyGrip(s, "README.md") });
+    try s.click(.{ .tag = try catalog.historyGrip(s, "README.md") }, .{});
+    try s.waitFor(try catalog.historyLine(s, "README.md"), .{});
+    // Shown, not scrubbed: a snapshot puts a document's text back but not its history, so a seek
+    // replaying a scrub would land on other text.
+    try s.moveTo(.{ .tag = try catalog.historyLine(s, "README.md"), .x = 0.35 }, .{});
+    try s.caption("…and dragging along it goes back through every step. A stretch of it is a tape to share, as this tour is.", .{ .near = try catalog.historyLine(s, "README.md") });
+    s.pause(3200);
 
     try s.chapter("Your turn");
-    try s.caption("That's the tour. Everything you saw is the real editor: pause, rewind, or take over at any moment.", .{
+    try s.caption("That's the tour. Find it again, and more, in Guides on the rail.", .{
         .title = "Your turn",
         .place = .middle,
-        .ms = 8000,
-        .hold = true,
+        .ms = 4000,
     });
+    s.pause(3600);
 }