-@item gradle=<flavour>
-Build with Gradle instead of Ant, specifying what flavour to assemble.
-If <flavour> is 'yes' or 'main', no flavour will be used. Note
-that this will not work on projects with flavours, since it will build
-all flavours and there will be no 'main' build.
+@item ndk=<version>
+Version of the NDK to use in this build. Defaults to the latest NDK release
+that included legacy toolchains, so as to not break builds that require
+toolchains no longer included in current versions of the NDK.
+
+The buildserver supports r9b with its legacy toolchains and the latest release
+as of writing this document, r10e. You may add support for more versions by
+adding them to 'ndk_paths' in your config file.
+
+@item gradle=<flavour1>[,<flavour2>,...]
+Build with Gradle instead of Ant, specifying what flavours to use. Flavours
+are case sensitive since the path to the output apk is as well.
+
+If only one flavour is given and it is 'yes' or 'main', no flavour will be
+used. Note that for projects with flavours, you must specify at least one
+valid flavour since 'yes' or 'main' will build all of them separately.