diff --git a/docs/KnownIssues.md b/docs/KnownIssues.md
index 3e624a774..4f8e9086d 100644
--- a/docs/KnownIssues.md
+++ b/docs/KnownIssues.md
@@ -37,6 +37,9 @@ Pasteboard
 Alert
 ```
 
+### Props that are only supported on one platform
+There are properties that work on one platform only, either because they can inherently only be supported on that platform or because they haven't been implemented on the other platforms yet. All of these are annotated with `@platform` in JS docs and have a platform badge on the website (generated from JS docs). See e.g. [Image](https://facebook.github.io/react-native/docs/image.html).
+
 ### Publishing modules on Android
 
 There is currently no easy way of publishing custom native modules on Android. Smooth work flow for contributors is important and this will be looked at very closely after the initial Open Source release. Of course the aim will be to streamline and optimize the process between iOS and Android as much as possible.