+#include "gdcmDictEntry.h"
+#include "gdcmDebug.h"
+#include "gdcmUtil.h"
+
+#include <iomanip> // for std::ios::left, ...
+#include <fstream>
+#include <stdio.h> // for sprintf
+
+namespace gdcm
+{
+//-----------------------------------------------------------------------------
+// Constructor / Destructor
+/**
+ * \brief Constructor
+ * @param group DICOM-Group Number
+ * @param elem DICOM-Element Number
+ * @param vr Value Representation
+ * @param vm Value Multiplicity
+ * @param name description of the element
+*/
+
+DictEntry::DictEntry(uint16_t group, uint16_t elem,
+ VRKey const &vr,
+ TagName const &vm,
+ TagName const &name)
+{
+ Group = group;
+ Element = elem;
+ VR = vr;
+ VM = vm;
+ Name = name;
+ Key = TranslateToKey(group, elem);
+}
+
+//-----------------------------------------------------------------------------
+// Public
+/**
+ * \brief If-and only if-the V(alue) R(epresentation)
+ * \ is unset then overwrite it.
+ * @param vr New V(alue) R(epresentation) to be set.
+ */
+void DictEntry::SetVR(VRKey const &vr)
+{
+ if ( IsVRUnknown() )
+ {
+ VR = vr;
+ }
+ else
+ {
+ gdcmErrorMacro( "Overwriting VR might compromise a dictionary");
+ }
+}
+
+/**
+ * \brief If-and only if-the V(alue) M(ultiplicity)
+ * \ is unset then overwrite it.
+ * @param vm New V(alue) M(ultiplicity) to be set.
+ */
+void DictEntry::SetVM(TagName const &vm)
+{
+ if ( IsVMUnknown() )
+ {
+ VM = vm;
+ }
+ else
+ {
+ gdcmErrorMacro( "Overwriting VM might compromise a dictionary");
+ }
+}
+
+/**
+ * \brief concatenates 2 uint16_t (supposed to be a Dicom group number
+ * and a Dicom element number)
+ * @param group the Dicom group number used to build the tag
+ * @param elem the Dicom element number used to build the tag
+ * @return the built tag
+ */
+TagKey DictEntry::TranslateToKey(uint16_t group, uint16_t elem)