diff --git a/README.md b/README.md
index 37e88a5..b513ca0 100644
--- a/README.md
+++ b/README.md
@@ -91,10 +91,9 @@ vaultik snapshot create
 vaultik snapshot list
 ```
 
-The default config is written for macOS. It backs up your home directory and
-`/Applications`, with a list of excludes. A configured path that does not exist
-stops the backup, unless you give `--skip-errors`. On another system, run
-`vaultik config edit` first and change the `snapshots` section.
+The default config backs up your home directory, with a list of excludes. On
+macOS it also backs up `/Applications`. A configured path that does not exist
+stops the backup, unless you give `--skip-errors`.
 
 On macOS, grant your terminal app Full Disk Access before the first backup. The
 setting is under System Settings, Privacy & Security, Full Disk Access. Without
@@ -770,7 +769,7 @@ Prints these:
 
 - the version
 - the commit
-- the commit date, labelled `build date`
+- the commit date
 - the Go version
 - the platform
 - the author
@@ -1318,6 +1317,8 @@ Two documents give the rules for work on this repository:
 - Go 1.26.1 or later.
 - Docker, with a daemon you can reach. `make test` and `make lint` run inside
   it.
+- Node and yarn, for [prettier](https://prettier.io/), which formats the
+  Markdown. `script/bootstrap` installs them when the machine has none.
 
 ### Workflow
 
@@ -1337,7 +1338,8 @@ standard. The scripts in `script/` are the entrypoints. Most `Makefile` targets
 call them.
 
 - `script/bootstrap`: installs what development needs. It installs Go from
-  `script/install-go` when the machine has none, and it fails without Docker.
+  `script/install-go` when the machine has none, and node, yarn and prettier for
+  the Markdown. It fails without Docker.
 - `script/setup`: prepares a fresh clone. It runs `script/bootstrap` and
   `script/install-precommit`.
 - `script/test`: runs the whole test suite, by building the `test` stage of the
@@ -1346,8 +1348,9 @@ call them.
   `Dockerfile`. The linter runs only inside Docker.
 - `script/lint-fix`: applies the linter's automatic fixes to your files. It
   needs a local Docker daemon. Run `script/lint` afterwards.
-- `script/fmt`: formats the Go code.
-- `script/fmt-check`: checks the formatting and changes nothing.
+- `script/fmt`: formats the Go code and the Markdown. The Markdown is formatted
+  with prettier.
+- `script/fmt-check`: checks the formatting of both and changes nothing.
 - `script/check`: runs these three scripts:
     - `script/test`
     - `script/lint`