diff --git a/convert2xkt.conf.js b/convert2xkt.conf.js
index f6dad16..285a8be 100644
--- a/convert2xkt.conf.js
+++ b/convert2xkt.conf.js
@@ -98,8 +98,15 @@ module.exports = {
 
             "minTileSize": 200,
 
+            // When converting .gltf source files that are accompanied by metadata JSON
+            // files, this will cause the metadata JSON files to not be embedded within the XKT output
+            // files, and instead be output separately. When converting split glTF / GLB models
+            // and outputting a manifest of split XKT files, the JSON files will be listed in the
+            // manifest alongside the XKT files.
+
             "externalMetadata": true
         },
+
         "glb": {
             "reuseGeometries": true,
             "includeTextures": true,
@@ -108,6 +115,12 @@ module.exports = {
             "excludeTypes": [],
             "minTileSize": 200,
 
+            // When converting GLB source files that are accompanied by metadata JSON
+            // files, this will cause the metadata JSON files to not be embedded within the XKT output
+            // files, and instead be output separately. When converting split glTF / GLB models
+            // and outputting a manifest of split XKT files, the JSON files will be listed in the
+            // manifest alongside the XKT files.
+
             "externalMetadata": true
         },