From a22215bd087a1251698cf26143f4eddc137a7608 Mon Sep 17 00:00:00 2001
From: Alex Fedoseev <alex.fedoseev@gmail.com>
Date: Fri, 20 Mar 2020 12:40:30 +0300
Subject: [PATCH] Add Caveats doc

---
 docs/09-I18n.md               |  2 +-
 docs/10-Caveats.md            | 17 +++++++++++++++++
 docs/{10-API.md => 11-API.md} |  0
 3 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 docs/10-Caveats.md
 rename docs/{10-API.md => 11-API.md} (100%)

diff --git a/docs/09-I18n.md b/docs/09-I18n.md
index 906b339c..7f2bbe51 100644
--- a/docs/09-I18n.md
+++ b/docs/09-I18n.md
@@ -9,4 +9,4 @@ Then errors returned from all validators must be of this type.
 
 ---
 
-Next: **[API →](./10-API.md)**
+Next: **[Caveats →](./10-Caveats.md)**
diff --git a/docs/10-Caveats.md b/docs/10-Caveats.md
new file mode 100644
index 00000000..7c8fbd9b
--- /dev/null
+++ b/docs/10-Caveats.md
@@ -0,0 +1,17 @@
+# Caveats
+## Warning 42
+This warning is disabled by default but if you explicitly enabled it, you might see the following message during a compilation:
+
+```
+Warning 42: this use of [field] relies on type-directed disambiguation, it will not compile with OCaml 4.00 or earlier.
+```
+
+To get rid of it, consider to disable it either globally via `bsconfig.json` or locally in form modules:
+
+```reason
+[@ocaml.warning "-42"];
+```
+
+---
+
+Next: **[API →](./10-API.md)**
diff --git a/docs/10-API.md b/docs/11-API.md
similarity index 100%
rename from docs/10-API.md
rename to docs/11-API.md