diff --git a/src/conv/main.vala b/src/conv/main.vala
index 0520644..50e9922 100644
--- a/src/conv/main.vala
+++ b/src/conv/main.vala
@@ -16,20 +16,41 @@ namespace LAview {
 		 * File format converter (lyx, tex, pdf).
 		 */
 		public class Converter : Object {
+			/**
+			 * Path to the LyX executable.
+			 */
 	        public string lyx_path { get; construct; }
+
+			/**
+			 * Path to latexmk.pl executable.
+			 */
 	        public string latexmk_pl_path { get; construct; }
+
+			/**
+			 * Path to the Perl executable.
+			 */
 	        public string perl_path { get; construct; }
 
 			/**
 			 * Constructs a new ``Converter``.
 			 */
 			public Converter () { Object(lyx_path: "lyx", latexmk_pl_path: "latexmk", perl_path: "perl"); }
+
+			/**
+			 * Constructs a new ``Converter``.
+			 * @param lyx_path path to the LyX executable.
+			 * @param latexmk_pl_path path to latexmk.pl executable.
+			 * @param perl_path path to Perl executable.
+			 */
 			public Converter.new_with_paths (string lyx_path, string latexmk_pl_path, string perl_path) {
 				Object(lyx_path: lyx_path, latexmk_pl_path: latexmk_pl_path, perl_path: perl_path);
 			}
 
 			/**
 			 * LyX->TeX conversion.
+			 * @param lyx_file path to LyX source.
+			 * @param tex_path path to LaTeX output.
+			 * @throws Error any conversion error.
 			 */
 			public Subprocess lyx2tex (string lyx_file, string tex_path) throws Error {
 			    /* check paths */
@@ -46,6 +67,9 @@ namespace LAview {
 
 			/**
 			 * TeX->LyX conversion.
+			 * @param tex_file path to LaTeX source.
+			 * @param lyx_file_path path to LyX output.
+			 * @throws Error any conversion error.
 			 */
 			public Subprocess tex2lyx (string tex_file, string lyx_file_path) throws Error {
 			    /* check paths */
@@ -66,6 +90,9 @@ namespace LAview {
 
 			/**
 			 * LyX->PDF conversion.
+			 * @param lyx_file path to LyX source.
+			 * @param pdf_path path to PDF output.
+			 * @throws Error any conversion error.
 			 */
 			public Subprocess lyx2pdf (string lyx_file, string pdf_path) throws Error {
 			    /* check paths */
@@ -82,6 +109,9 @@ namespace LAview {
 
 			/**
 			 * TeX->PDF conversion.
+			 * @param tex_file path to LaTeX source.
+			 * @param pdf_path path to PDF output.
+			 * @throws Error any conversion error.
 			 */
 			public Subprocess tex2pdf (string tex_file, string pdf_path) throws Error {
 			    /* check paths */
diff --git a/src/core-iface/CoreInterface.vala b/src/core-iface/CoreInterface.vala
index e898508..1bb0625 100644
--- a/src/core-iface/CoreInterface.vala
+++ b/src/core-iface/CoreInterface.vala
@@ -19,6 +19,7 @@ namespace LAview.Core {
 
 		/**
 		 * Get data object.
+		 * @param name data object name.
 		 */
 		public abstract PluginData get_data_object (string name);
 	}
@@ -61,6 +62,9 @@ namespace LAview.Core {
 
 		/**
 		 * Compose the object.
+		 * @param parent parent Object/Window.
+		 * @param answers answers values.
+		 * @throws Error any compose error.
 		 */
 		public abstract bool compose (Object parent, Gee.HashMap<string, AnswerValue> answers) throws Error;
 
@@ -74,31 +78,58 @@ namespace LAview.Core {
 	 * Request Answer Value.
 	 */
 	public abstract class AnswerValue : Object {
+		/**
+		 * Constructs a new ``AnswerValue``.
+		 */
+		public AnswerValue () { }
 	}
 
 	/**
-	 * String.
+	 * String Answer.
 	 */
 	public class AnswerString : AnswerValue {
+		/**
+		 * String value.
+		 */
 		public string value;
 
+		/**
+		 * Constructs a new ``AnswerString``.
+		 * @param value string value.
+		 */
 		public AnswerString (string value = "") {
 			this.value = value;
 		}
 	}
 
 	/**
-	 * 1D Array.
+	 * 1D Array Answer.
 	 */
 	public class AnswerArray1D : AnswerValue {
+		/**
+		 * Array value.
+		 */
 		public string[] value;
+
+		/**
+		 * Constructs a new ``AnswerArray1D``.
+		 */
+		public AnswerArray1D () { }
 	}
 
 	/**
-	 * 2D Array;
+	 * 2D Array Answer;
 	 */
 	public class AnswerArray2D : AnswerValue {
+		/**
+		 * Array value.
+		 */
 		public string[,] value;
+
+		/**
+		 * Constructs a new ``AnswerArray1D``.
+		 */
+		public AnswerArray2D () { }
 	}
 
 	/**
diff --git a/src/core/AppDirs.vala b/src/core/AppDirs.vala
index 83457d3..9ef6422 100644
--- a/src/core/AppDirs.vala
+++ b/src/core/AppDirs.vala
@@ -1,21 +1,76 @@
+/**
+ * System calls.
+ */
 namespace Get {
+	/**
+	 * Gets library path.
+	 * @param so_path out path to shared library.
+	 * @param addr initialization method source address.
+	 */
 	extern void library_path (string so_path, void *addr);
 }
 
+/**
+ * LaTeX view.
+ *
+ * Public system of data view in the LaTeX format.
+ */
 namespace LAview.Core {
 
+	/**
+	 * Application directories/paths.
+	 */
 	class AppDirs {
 
+		/**
+		 * Shared library path.
+		 */
 		public static File so_path;
+
+		/**
+		 * Binary directory.
+		 */
 		public static File exec_dir;
+
+		/**
+		 * Common directory (parent to binary and shared).
+		 */
 		public static File common_dir;
+
+		/**
+		 * Data Plugins directory.
+		 */
 		public static string data_plugins_dir;
+
+		/**
+		 * Object Plugins directory.
+		 */
 		public static string object_plugins_dir;
+
+		/**
+		 * User Interface Glade files directory.
+		 */
 		public static string ui_dir;
+
+		/**
+		 * Settings/GLib Schemas directory.
+		 */
 		public static string settings_dir;
+
+		/**
+		 * Temporary directory.
+		 */
 		public static string temp_dir;
+
+		/**
+		 * Cache in temporary directory.
+		 */
 		public static string cache_dir;
 
+		/**
+		 * Initialization.
+		 * @throws FileError file i/o error.
+		 */
 		public static void init () throws FileError {
 			char _so_path[256];
 			Get.library_path ((string)_so_path, (void*)init);
@@ -36,6 +91,10 @@ namespace LAview.Core {
 			cache_dir = Path.build_path (Path.DIR_SEPARATOR_S, AppDirs.temp_dir, "cache");
 		}
 
+		/**
+		 * Termination.
+		 * @throws Error any error.
+		 */
 		public static void terminate () throws Error {
 			rm_rf (File.new_for_path(temp_dir));
 		}
diff --git a/src/core/Core.vala b/src/core/Core.vala
index 7858b68..79f8994 100644
--- a/src/core/Core.vala
+++ b/src/core/Core.vala
@@ -1,5 +1,10 @@
 using GObject, Plugins;
 
+/**
+ * LaTeX view.
+ *
+ * Public system of data view in the LaTeX format.
+ */
 namespace LAview.Core {
 
 	/**
@@ -13,16 +18,25 @@ namespace LAview.Core {
 
 		AppSettings settings;
 
+		/**
+		 * Path to LyX source.
+		 */
 		public string lyx_path {
 			get { return settings.lyx_path; }
 			set { settings.lyx_path = value; }
 		}
 
+		/**
+		 * Path to latexmk.pl executable.
+		 */
 		public string latexmk_pl_path {
 			get { return settings.latexmk_pl_path; }
 			set { settings.latexmk_pl_path = value; }
 		}
 
+		/**
+		 * Path to Perl executable.
+		 */
 		public string perl_path {
 			get { return settings.perl_path; }
 			set { settings.perl_path = value; }
@@ -38,11 +52,19 @@ namespace LAview.Core {
 			set { settings.object_path = value; }
 		}
 
+		/**
+		 * Data plugins.
+		 */
 		public Gee.HashMap<Type, PluginData> data_plugins = new Gee.HashMap<Type, PluginData>();
+
+		/**
+		 * Object plugins.
+		 */
 		public Gee.HashMap<Type, PluginObject> object_plugins = new Gee.HashMap<Type, PluginObject>();
 
 		/**
 		 * Load Data Modules.
+		 * @param dir_path directory with data modules.
 		 */
 		public void load_data_modules (string dir_path) {
 			Gee.ArrayList<Plugins.Module> tmp_modules = null;
@@ -59,6 +81,7 @@ namespace LAview.Core {
 
 		/**
 		 * Load Protocol Objects Modules.
+		 * @param dir_path directory with object modules.
 		 */
 		public void load_object_modules (string dir_path) {
 			Gee.ArrayList<Plugins.Module> tmp_modules = null;
@@ -81,6 +104,10 @@ namespace LAview.Core {
 			GObject.Plugins.unload_modules (object_modules);
 		}
 
+		/**
+		 * Constructs a new ``Core``.
+		 * @throws Error any error.
+		 */
 		public Core () throws Error {
 
 			/* Initialization */
@@ -100,10 +127,16 @@ namespace LAview.Core {
 			clear_cache ();
 		}
 
+		/**
+		 * Gets cache directory.
+		 */
 		public string get_cache_dir () {
 			return AppDirs.cache_dir;
 		}
 
+		/**
+		 * Gets templates human readable names.
+		 */
 		public string[] get_templates_readable_names () {
 			string[] names = {};
 			foreach (var t in templates)
@@ -111,10 +144,17 @@ namespace LAview.Core {
 			return names;
 		}
 
+		/**
+		 * Gets template path by its index.
+		 */
 		public string get_template_path_by_index (int index) {
 			return templates[index].get_path ();
 		}
 
+		/**
+		 * Adds a new template.
+		 * @param path new template path.
+		 */
 		public void add_template (string path) {
 			var file = File.new_for_path (path);
 			if (!file.query_exists() || file.query_file_type(FileQueryInfoFlags.NONE) != FileType.REGULAR)
@@ -131,12 +171,20 @@ namespace LAview.Core {
 			save_templates_list ();
 		}
 
+		/**
+		 * Removes template by index.
+		 * @param index template index.
+		 */
 		public void remove_template (int index) {
 			if (index < templates.size)
 				templates.remove_at (index);
 			save_templates_list ();
 		}
 
+		/**
+		 * Gets objects list.
+		 * @param template_index template index.
+		 */
 		public string[] get_objects_list (int template_index) throws Error {
 			if (template_index == last_template_index) return objects_list;
 			last_template_index = template_index;
@@ -186,6 +234,11 @@ namespace LAview.Core {
 			return objects_list;
 		}
 
+		/**
+		 * Compose/Construct the object.
+		 * @param parent parent window.
+		 * @param object_index object index.
+		 */
 		public bool compose_object (Object parent, int object_index) throws Error {
 			var cnt = object_index;
 			foreach (var req in requests.entries)
@@ -201,6 +254,10 @@ namespace LAview.Core {
 			return composed_objects[object_index];;
 		}
 
+		/**
+		 * Generates PDF document.
+		 * @throws Error any print error.
+		 */
 		public Subprocess print_document () throws Error {
 			foreach (var c in composed_objects)
 				if (c == false)
@@ -210,6 +267,10 @@ namespace LAview.Core {
 			return converter.tex2pdf (doc_tex_path(), doc_pdf_path());
 		}
 
+		/**
+		 * Gets out generated LyX document file path.
+		 * @throws Error any error.
+		 */
 		public string get_lyx_file_path () throws Error {
 			foreach (var c in composed_objects)
 				if (c == false)
@@ -217,6 +278,10 @@ namespace LAview.Core {
 			return generate_document_lyx();
 		}
 
+		/**
+		 * Gets out generated PDF document file path.
+		 * @throws Error any error.
+		 */
 		public string get_pdf_file_path () throws Error {
 			var pdf_path = Path.build_path (Path.DIR_SEPARATOR_S, AppDirs.cache_dir, "document.pdf");
 			if (!File.new_for_path(pdf_path).query_exists())
@@ -224,6 +289,10 @@ namespace LAview.Core {
 			return pdf_path;
 		}
 
+		/**
+		 * Gets data object by its name.
+		 * @param name data object name.
+		 */
 		public PluginData get_data_object (string name) {
 			return data_plugins2[name];
 		}
diff --git a/src/core/FileUtils.vala b/src/core/FileUtils.vala
index 1226650..719d162 100644
--- a/src/core/FileUtils.vala
+++ b/src/core/FileUtils.vala
@@ -1,3 +1,8 @@
+/**
+ * LaTeX view.
+ *
+ * Public system of data view in the LaTeX format.
+ */
 namespace LAview.Core {
 	void rm_rf (File directory) throws Error {
 		var children = directory.enumerate_children ("standard::*",
diff --git a/src/core/Templates.vala b/src/core/Templates.vala
index ab7eda4..bd09490 100644
--- a/src/core/Templates.vala
+++ b/src/core/Templates.vala
@@ -1,5 +1,10 @@
 using GObject, Plugins;
 
+/**
+ * LaTeX view.
+ *
+ * Public system of data view in the LaTeX format.
+ */
 namespace LAview.Core {
 
 	/**