ADded comments and hook for copy constructor

eo/tutorial/Templates/eoMyStruct.tmpl

@@ -6,6 +6,21 @@ The above line is usefulin Emacs-like editors
 /*
 Template for creating a new representation in EO
 ================================================
+
+Mandatory:
+- a default constructor (constructor without any argument)
+- the I/O functions (readFrom and printOn)
+
+However, if you are using dynamic memory, there are 2 places
+to allocate it: the default constructor (if possible?), or, more in
+the EO spirit, the eoInit object, that you will need to write anyway
+(template file init.tmpl). 
+
+But remember that a COPY CONSTRUCTOR will be used in many places in EO,
+so make sure that the default copy constructor works, or, even better,
+do write your own if in doubt. 
+And of course write the corresponding destructor!
+
 */
 
 #ifndef _eoMyStruct_h
@@ -40,6 +55,19 @@ public:
     // END   Code of default Ctor of an eoMyStruct object
   }
 
+  /** Copy Ctor: you MUST provide a copy ctor if the default
+   * one is not what you want
+   * If this is the case, uncomment and fill the following
+   */
+  /*
+  eoMyStruct(const eoMyStruct &) 
+  {  
+    // START Code of copy Ctor of an eoMyStruct object
+    // END   Code of copy Ctor of an eoMyStruct object
+  } 
+  */
+
+
   virtual ~eoMyStruct()
   {
     // START Code of Destructor of an eoEASEAGenome object