X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/8900e3ac8a8f610d4c1b3fbe7bdf4f0358efc28d..1557f7d3a380ed38801f5fada27550c10f89870f:/docs/usage_and_configuration/black_as_a_server.md

diff --git a/docs/usage_and_configuration/black_as_a_server.md b/docs/usage_and_configuration/black_as_a_server.md
index fc9d1ca..f24fb34 100644
--- a/docs/usage_and_configuration/black_as_a_server.md
+++ b/docs/usage_and_configuration/black_as_a_server.md
@@ -50,12 +50,18 @@ is rejected with `HTTP 501` (Not Implemented).
 The headers controlling how source code is formatted are:
 
 - `X-Line-Length`: corresponds to the `--line-length` command line flag.
+- `X-Skip-Source-First-Line`: corresponds to the `--skip-source-first-line` command line
+  flag. If present and its value is not an empty string, the first line of the source
+  code will be ignored.
 - `X-Skip-String-Normalization`: corresponds to the `--skip-string-normalization`
   command line flag. If present and its value is not the empty string, no string
   normalization will be performed.
 - `X-Skip-Magic-Trailing-Comma`: corresponds to the `--skip-magic-trailing-comma`
-  command line flag. If present and its value is not the empty string, trailing commas
+  command line flag. If present and its value is not an empty string, trailing commas
   will not be used as a reason to split lines.
+- `X-Preview`: corresponds to the `--preview` command line flag. If present and its
+  value is not an empty string, experimental and potentially disruptive style changes
+  will be used.
 - `X-Fast-Or-Safe`: if set to `fast`, `blackd` will act as _Black_ does when passed the
   `--fast` command line flag.
 - `X-Python-Variant`: if set to `pyi`, `blackd` will act as _Black_ does when passed the