diff --git a/lib/options.js b/lib/options.js
index 70d576a6..3694fb64 100644
--- a/lib/options.js
+++ b/lib/options.js
@@ -18,15 +18,24 @@ module.exports = {
     lcov: false,
 
     // (Function) A filter function to execute for each element in the V8 list. (V8 only)
+    // entryFilter: (entry) => {
+    //     if (entry.url.indexOf('googleapis.com') !== -1) {
+    //         return false;
+    //     }
+    //     return true;
+    // },
     entryFilter: null,
 
     // (Function) A filter function to execute for each element in the sources which unpacked from the source map. (Sourcemap only)
+    // sourceFilter: (sourcePath) => sourcePath.search(/src\/.+/) !== -1,
     sourceFilter: null,
 
     // source path handler. (Istanbul only)
+    // sourcePath: (filePath) => `wwwroot/${filePath}`,
     sourcePath: null,
 
     // (usually not used) source finder for Istanbul HTML report. (Istanbul only)
+    // sourceFinder: (filePath) => `src/${filePath}`,
     sourceFinder: null,
 
     // (Array) watermarks for low/medium/high. Defaults to [50, 80]