diff --git a/Directory.Build.props b/Directory.Build.props
index b958604..e60d425 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -13,7 +13,7 @@
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <UseArtifactsOutput>true</UseArtifactsOutput>
     <PackageIcon>icon.png</PackageIcon>
-    <VersionPrefix>0.4.5</VersionPrefix>
+    <VersionPrefix>0.5.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <LangVersion>10.0</LangVersion>
     <Features>strict</Features>
diff --git a/OpenEphys.Onix1/TS4231V1PositionData.cs b/OpenEphys.Onix1/TS4231V1PositionData.cs
index 77f602f..d9038d8 100644
--- a/OpenEphys.Onix1/TS4231V1PositionData.cs
+++ b/OpenEphys.Onix1/TS4231V1PositionData.cs
@@ -24,7 +24,10 @@ namespace OpenEphys.Onix1
     /// <item><description>Two SteamVR V1 base stations are used.</description></item>
     /// <item><description>The base stations have been synchronized with a patch cable and their modes set to
     /// ‘A’ and ‘b’, respectively.</description></item>
-    /// <item><description>The base stations are pointed in the same direction.</description></item>
+    /// <item><description>The base stations are in the same 3D rotational orientation at an arbitrary
+    /// translational offset. The most common way to achieve this is by mounting the base stations along a
+    /// beam over the area of interest so they have the same rotational orientation but are offset along the
+    /// axis parallel to the support beam.</description></item>
     /// <item><description>The Z-axis extends away the emitting face of lighthouses, X along the direction of
     /// the text on the back label, and Y from bottom to top text on the back label.</description></item>
     /// </list>