diff --git a/app/nose/bin/apps.tsx b/app/nose/bin/apps.tsx
index 81a93d6..1dbc9a8 100644
--- a/app/nose/bin/apps.tsx
+++ b/app/nose/bin/apps.tsx
@@ -1,3 +1,5 @@
+// Show the webapps hosted on this NOSEputer.
+
 import { $ } from "bun"
 import { apps } from "app/src/webapp"
 
@@ -12,6 +14,6 @@ export default async function () {
   port = port === "80" ? "" : `:${port}`
 
   return <>
-    {apps().map(app => <><a href={`http://${app}.${domain}${port}`}>{app}</a>{" "}</>)}
+    {apps().map(app => <a href={`http://${app}.${domain}${port}`}>{app}</a>)}
   </>
 }
\ No newline at end of file
diff --git a/app/nose/bin/cat.ts b/app/nose/bin/cat.ts
index 760c88e..48bacfc 100644
--- a/app/nose/bin/cat.ts
+++ b/app/nose/bin/cat.ts
@@ -1,3 +1,5 @@
+// Show the contents of a file, if possible.
+
 import { escapeHTML } from "bun"
 import { readdirSync } from "fs"
 import { join, extname } from "path"
diff --git a/app/nose/bin/cd.ts b/app/nose/bin/cd.ts
index 3f2c937..19b14cd 100644
--- a/app/nose/bin/cd.ts
+++ b/app/nose/bin/cd.ts
@@ -1,3 +1,5 @@
+// Change directory.
+
 import { dirname, resolve, isAbsolute } from "path"
 import { statSync } from "fs"
 import { projectDir } from "@/project"
diff --git a/app/nose/bin/counter.tsx b/app/nose/bin/counter.tsx
index 307aef3..5b37583 100644
--- a/app/nose/bin/counter.tsx
+++ b/app/nose/bin/counter.tsx
@@ -1,3 +1,5 @@
+// stream() demo. Counts.
+
 import { stream } from "@/stream"
 
 export default async function () {
diff --git a/app/nose/bin/echo.ts b/app/nose/bin/echo.ts
index 0e06a22..07c0d30 100644
--- a/app/nose/bin/echo.ts
+++ b/app/nose/bin/echo.ts
@@ -1,3 +1,5 @@
+// Monkey see, monkey do.
+
 export default function (...args: string[]): string {
   return args.join(" ")
 }
\ No newline at end of file
diff --git a/app/nose/bin/edit.tsx b/app/nose/bin/edit.tsx
index 469921e..0d0633f 100644
--- a/app/nose/bin/edit.tsx
+++ b/app/nose/bin/edit.tsx
@@ -1,3 +1,5 @@
+// Open the Advanced Text Editor and start editing a file.
+
 import { readdirSync } from "fs"
 import { join, extname } from "path"
 
diff --git a/app/nose/bin/env.ts b/app/nose/bin/env.ts
index df35c62..700be9a 100644
--- a/app/nose/bin/env.ts
+++ b/app/nose/bin/env.ts
@@ -1,3 +1,7 @@
+// NOSE developer feature.
+//
+// Show some debugging information.
+
 import { NOSE_STARTED, NOSE_SYS, NOSE_DIR, GIT_SHA } from "@/config"
 
 export default function () {
diff --git a/app/nose/bin/game.tsx b/app/nose/bin/game.tsx
index d70bd4e..a1a93b8 100644
--- a/app/nose/bin/game.tsx
+++ b/app/nose/bin/game.tsx
@@ -1,4 +1,6 @@
 /// <reference lib="dom" />
+// Small game demo.
+
 export const game = true
 
 import type { InputState } from "@/shared/types"
diff --git a/app/nose/bin/greet.ts b/app/nose/bin/greet.ts
deleted file mode 100644
index f2e21f7..0000000
--- a/app/nose/bin/greet.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export default function (name: string): string {
-  return `Hi, ${name || "stranger"}!!!!`
-}
\ No newline at end of file
diff --git a/app/nose/bin/help.ts b/app/nose/bin/help.ts
new file mode 100644
index 0000000..d0ade0c
--- /dev/null
+++ b/app/nose/bin/help.ts
@@ -0,0 +1,26 @@
+// Show helpful information about a command. 
+//
+// (Hopefully.)
+
+import { commandPath } from "@/commands"
+
+export default async function (cmd: string) {
+  const path = commandPath(cmd)
+  if (!path) throw `${cmd} not found`
+
+  const code = (await Bun.file(path).text()).split("\n")
+  let docs = []
+
+  for (const line of code) {
+    if (line.startsWith("///")) {
+      docs.push("Runs in the browser.\n")
+      continue
+    } else if (line.startsWith("//")) {
+      docs.push(line.slice(2).trim())
+    } else if (line.trim()) {
+      break
+    }
+  }
+
+  return docs.join("\n")
+}
\ No newline at end of file
diff --git a/app/nose/bin/load.ts b/app/nose/bin/load.ts
index 6857499..12377c6 100644
--- a/app/nose/bin/load.ts
+++ b/app/nose/bin/load.ts
@@ -1,8 +1,11 @@
+// Load a project so you can work on it.
+
 import { apps } from "app/src/webapp"
 import { getState } from "@/session"
 
 export default function (project: string) {
     const state = getState()
+    if (!project) throw `usage: load <project name>`
 
     if (state && apps().includes(project)) {
         state.project = project
diff --git a/app/nose/bin/ls.tsx b/app/nose/bin/ls.tsx
index 28abd31..44a1756 100644
--- a/app/nose/bin/ls.tsx
+++ b/app/nose/bin/ls.tsx
@@ -1,3 +1,5 @@
+// Look around.
+
 import { readdirSync } from "fs"
 import { NOSE_WWW } from "app/src/config"
 import { projectName, projectDir } from "@/project"
diff --git a/app/nose/bin/mkdir.ts b/app/nose/bin/mkdir.ts
index f884bdd..6732727 100644
--- a/app/nose/bin/mkdir.ts
+++ b/app/nose/bin/mkdir.ts
@@ -1,3 +1,7 @@
+// Makes a directory inside the current directory.
+//
+// Essentially `mkdir -p`.
+
 import { mkdirSync } from "fs"
 import { join } from "path"
 import { projectDir } from "@/project"
diff --git a/app/nose/bin/new.ts b/app/nose/bin/new.ts
index 4a788b5..d8d7c4a 100644
--- a/app/nose/bin/new.ts
+++ b/app/nose/bin/new.ts
@@ -1,3 +1,7 @@
+// Create a new project.
+//
+// We should probably rename this...
+
 import { mkdirSync, writeFileSync } from "fs"
 import { join } from "path"
 
@@ -8,7 +12,7 @@ import { isDir } from "app/src/utils"
 import load from "./load"
 
 export default function (project: string) {
-    if (!project) throw "Please provide a name for your new project\n> new <project>"
+    if (!project) throw "usage: new <project name>"
 
     if (apps().includes(project)) throw `${project} already exists`
 
diff --git a/app/nose/bin/project.ts b/app/nose/bin/project.ts
index 2537616..f49e27f 100644
--- a/app/nose/bin/project.ts
+++ b/app/nose/bin/project.ts
@@ -1,3 +1,5 @@
+// Print the currently loaded project.
+
 import { getState } from "@/session"
 
 export default function () {
diff --git a/app/nose/bin/projects.tsx b/app/nose/bin/projects.tsx
index f03c95c..1e859a4 100644
--- a/app/nose/bin/projects.tsx
+++ b/app/nose/bin/projects.tsx
@@ -1,3 +1,5 @@
+// Show the projects on this NOSEputer.
+
 import { apps } from "app/src/webapp"
 import { getState } from "@/session"
 
diff --git a/app/nose/bin/pwd.ts b/app/nose/bin/pwd.ts
index 72aa856..2bec605 100644
--- a/app/nose/bin/pwd.ts
+++ b/app/nose/bin/pwd.ts
@@ -1,3 +1,5 @@
+// Show the current working directory.
+
 import { dirname } from "path"
 import { projectDir } from "@/project"
 import { getState } from "@/session"
diff --git a/app/nose/bin/rm.ts b/app/nose/bin/rm.ts
index 5efd262..a80e1ba 100644
--- a/app/nose/bin/rm.ts
+++ b/app/nose/bin/rm.ts
@@ -1,3 +1,5 @@
+// Remove a file.
+
 import { unlinkSync, readdirSync } from "fs"
 import { join } from "path"
 import { projectDir } from "@/project"
diff --git a/app/nose/bin/rmdir.ts b/app/nose/bin/rmdir.ts
index f8f0d97..a924434 100644
--- a/app/nose/bin/rmdir.ts
+++ b/app/nose/bin/rmdir.ts
@@ -1,3 +1,5 @@
+// Remove a directory, and all its children.
+
 import { rmdirSync, readdirSync } from "fs"
 import { join } from "path"
 import { projectDir } from "@/project"
diff --git a/app/nose/bin/share.ts b/app/nose/bin/share.ts
index 849dcdd..b99235f 100644
--- a/app/nose/bin/share.ts
+++ b/app/nose/bin/share.ts
@@ -1,3 +1,5 @@
+// Share a webapp with the public internet.
+
 import { apps } from "app/src/webapp"
 import { connectSneaker, sneakers, sneakerUrl } from "app/src/sneaker"
 
diff --git a/app/nose/bin/touch.ts b/app/nose/bin/touch.ts
index 6770e8c..5f6f6b9 100644
--- a/app/nose/bin/touch.ts
+++ b/app/nose/bin/touch.ts
@@ -1,3 +1,5 @@
+// Create an empty text file.
+
 import { join } from "path"
 import { readdirSync } from "fs"
 import { projectDir } from "@/project"
diff --git a/app/nose/bin/unshare.ts b/app/nose/bin/unshare.ts
index 57fa553..128f71d 100644
--- a/app/nose/bin/unshare.ts
+++ b/app/nose/bin/unshare.ts
@@ -1,3 +1,5 @@
+// Stop sharing a webapp with the public internet.
+
 import { apps } from "app/src/webapp"
 import { disconnectSneaker, sneakers } from "app/src/sneaker"
 
diff --git a/app/nose/bin/update.ts b/app/nose/bin/update.ts
index 1ef1f81..8ac2a8b 100644
--- a/app/nose/bin/update.ts
+++ b/app/nose/bin/update.ts
@@ -1,3 +1,5 @@
+// Update NOSE itself and restart.
+
 import { $ } from "bun"
 
 export default async function () {
diff --git a/app/nose/bin/uptime.ts b/app/nose/bin/uptime.ts
index 8fbb831..0f97652 100644
--- a/app/nose/bin/uptime.ts
+++ b/app/nose/bin/uptime.ts
@@ -1,3 +1,7 @@
+// How long has the NOSE app been running?
+//
+// Totally different from the host computer's uptime. Usually.
+
 import { NOSE_STARTED } from "@/config"
 
 export default function () {