diff --git a/src/bootstrap.js b/src/bootstrap.js
index f09938b8..cab69551 100644
--- a/src/bootstrap.js
+++ b/src/bootstrap.js
@@ -88,7 +88,16 @@ window.WebPage = function() {
     return page;
 };
 
-// Make "fs.open" throw an exception in case it fails
+// window.fs
+// JavaScript "shim" to throw exceptions in case a critical operation fails.
+
+/** Open and return a "file" object.
+ * It will throw exception if it fails.
+ *
+ * @param path Path of the file to open
+ * @param mode Open Mode. A string made of 'r', 'w', 'a/+' characters.
+ * @return "file" object
+ */
 window.fs.open = function(path, mode) {
     var file = window.fs._open(path, mode);
     if (file) {
@@ -96,3 +105,31 @@ window.fs.open = function(path, mode) {
     }
     throw "Unable to open file '"+ path +"'";
 };
+
+/** Open, read and return content of a file.
+ * It will throw an exception if it fails.
+ *
+ * @param path Path of the file to read from
+ * @return file content 
+ */
+window.fs.read = function(path) {
+    var f = fs.open(path, 'r'),
+        content = f.read();
+
+    f.close();
+    return content;
+};
+
+/** Open and write content to a file
+ * It will throw an exception if it fails.
+ *
+ * @param path Path of the file to read from
+ * @param content Content to write to the file
+ * @param mode Open Mode. A string made of 'w' or 'a / +' characters.
+ */
+window.fs.write = function(path, content, mode) {
+    var f = fs.open(path, mode);
+
+    f.write(content);
+    f.close();
+};
diff --git a/src/filesystem.h b/src/filesystem.h
index 80fd60ec..c2eee3f8 100644
--- a/src/filesystem.h
+++ b/src/filesystem.h
@@ -70,25 +70,53 @@ public:
     FileSystem(QObject *parent = 0);
 
 public slots:
-    bool exists(const QString &path) const;
-    bool isDirectory(const QString &path) const;
-    bool isFile(const QString &path) const;
+    // Attributes
+    // - int size(const QString &path) const; //< TODO - in bytes, or throw excep if doesn't exists
+    // - QDateTime lastModified(const QString &path) const; //< TODO - returns the time that a file was last modified as a Date object.
 
+    // Files / Directories
+    // - copy()
+    // - move()
+    // - touch(path, date)
+    // - rename()
+
+    // Directory
+    // - copyTree(source, target) //< copies files from a source path to a target path,
+    //                                copying the files of the source tree to the corresponding locations
+    //                                relative to the target, copying but not traversing into
+    //                                symbolic links to directories.
     bool makeDirectory(const QString &path) const;
     bool makeTree(const QString &path) const;
-
-    bool remove(const QString &path) const;
     bool removeDirectory(const QString &path) const;
     bool removeTree(const QString &path) const;
 
+    // Files
+    // 'open(path, mode)' implemented in "bootstrap.js" JavaScript shim, using '_open(path, mode)'
+    QObject *_open(const QString &path, const QString &mode) const;
+    // 'read(path)' implemented in "bootstrap.js" JavaScript shim
+    // 'write(path, mode)' implemented in the "bootstrap.js" JavaScript shim
+
+    bool remove(const QString &path) const;
+
+    // Listing
     QStringList list(const QString &path) const;
 
+    // Paths
+    QString separator() const;
     QString workingDirectory() const;
     bool changeWorkingDirectory(const QString &path) const;
+    // - absolute(relative_path)
 
-    QString separator() const;
-
-    QObject *_open(const QString &path, const QString &mode) const;
+    // Tests
+    bool exists(const QString &path) const;
+    bool isDirectory(const QString &path) const;
+    bool isFile(const QString &path) const;
+    // - isAbsolute()
+    // - isExecutable()
+    // - isLink()
+    // - isMount()
+    // - isReadable()
+    // - isWritable()
 };
 
 #endif // FILESYSTEM_H