Fix README

packages/effect-lens-next/README.md

@@ -247,7 +247,7 @@ const ref = yield* SubscriptionRef.make<{
 
 const logUserCount = (users: View.View<readonly User[]>) =>
     Effect.gen(function*() {
-        const userCount = View.map(users, users => users.length)
+        const userCount = View.focusArrayLength(users)
         yield* Console.log(`There are ${yield* View.get(userCount)} users`)
         yield* Stream.runForEach(
             View.changes(userCount),

packages/effect-lens/README.md

@@ -239,30 +239,31 @@ const nameLens = lens.pipe(
 
 ### Subscribable
 
-Lens implements both Effect's `Subscribable` and `Readable`, which you can use as a constraint to allow some parts of your app to only read and subscribe to the Lenses you provide them:
+Effect's `Subscribable` is a read-only, reactive view of a value: it lets you read the current value and observe subsequent changes. Every `Lens` implements both `Subscribable` and `Readable`, which you can use as constraints to allow some parts of your app to only read and subscribe to the Lenses you provide them:
 ```typescript
 const ref = yield* SubscriptionRef.make<{
     readonly users: readonly User[]
-}>({ users: [...] })
+}>({ users: [] })
 
-const someFunctionThatShouldOnlyHaveReadonlyAccessToTheState = (
-    usersSub: Subscribable.Subscribable<readonly User[], never, never>
-) => Effect.gen(function*() {
-    // Do whatever
-    const usersCountSub = Subscribable.map(usersSub, a => a.length)
-    const users = yield* usersSub.get
-    yield* Effect.forkScoped(Stream.runForEach(usersSub.changes, ...))
-})
+const logUserCount = (users: Subscribable.Subscribable<readonly User[]>) =>
+    Effect.gen(function*() {
+        const userCount = Subscribable.focusArrayLength(users)
+        yield* Console.log(`There are ${yield* userCount.get} users`)
+        yield* Stream.runForEach(
+            userCount.changes,
+            count => Console.log(`There are now ${count} users`),
+        )
+    })
 
-const lens = ref.pipe(
+const usersLens = ref.pipe(
     Lens.fromSubscriptionRef,
     Lens.focusObjectOn("users"),
 )
-yield* someFunctionThatShouldOnlyHaveReadonlyAccessToTheState(lens)
+yield* Effect.forkScoped(logUserCount(usersLens))
 ```
 
 #### Focusing
-This library re-exports Effect's `Subscribable` module and adds error transforms and recovery (`catchAll`, `catchAllCause`, `orElse`, `orElseSucceed`, and `retry`), plus transforms to narrow the focus of `Subscribable`'s, same as Lenses:
+Subscribables can be focused in the same way as Lenses. This library re-exports Effect's `Subscribable` module and adds value and error transforms, plus recovery (`catchAll`, `catchAllCause`, `orElse`, `orElseSucceed`, and `retry`):
 ```typescript
 import { Subscribable } from "effect-lens"