--- a/src/main.cpp	Thu Jun 08 13:31:08 2017 +0300
+++ b/src/main.cpp	Tue Jun 13 10:56:31 2017 +0300
@@ -328,8 +328,12 @@
 }
 
 
+//
+// Application main window destructor
+//
 SyntilistaMainWindow::~SyntilistaMainWindow()
 {
+    // Save current settings and free resources
     saveSettings();
 
     delete ui;
@@ -338,6 +342,9 @@
 }
 
 
+//
+// Helper function for showing messages in the statusbar/line
+//
 void SyntilistaMainWindow::statusMsg(const QString &msg)
 {
     ui->statusbar->showMessage(msg);
@@ -368,6 +375,9 @@
 }
 
 
+//
+// Window scale / zoom changing
+//
 void SyntilistaMainWindow::changeUIZoomIn()
 {
     setScale += 0.1f;
@@ -389,6 +399,9 @@
 }
 
 
+//
+// Slot for changed selection of person entry
+//
 void SyntilistaMainWindow::selectedPersonChanged(const QModelIndex &curr, const QModelIndex &prev)
 {
     (void) prev;
@@ -404,14 +417,6 @@
 }
 
 
-void SyntilistaMainWindow::updateSortOrder(int index, Qt::SortOrder order)
-{
-    peopleSortIndex = index;
-    peopleSortOrder = order;
-    updatePersonList();
-}
-
-
 void SyntilistaMainWindow::setActivePerson(qint64 id)
 {
     currPerson.id = id;
@@ -467,8 +472,16 @@
 
 
 //
-// Widget slot handlers
+// Slot for changing person list sort order
 //
+void SyntilistaMainWindow::updateSortOrder(int index, Qt::SortOrder order)
+{
+    peopleSortIndex = index;
+    peopleSortOrder = order;
+    updatePersonList();
+}
+
+
 void SyntilistaMainWindow::on_button_Quit_clicked()
 {
     close();