diff --git a/sources/numerotationcontextcommands.cpp b/sources/numerotationcontextcommands.cpp
new file mode 100644
index 000000000..7d35fbe98
--- /dev/null
+++ b/sources/numerotationcontextcommands.cpp
@@ -0,0 +1,239 @@
+#include "numerotationcontextcommands.h"
+
+/**
+ * @brief Constructor
+ */
+NumerotationContextCommands::NumerotationContextCommands(Diagram *d, const NumerotationContext &nc):
+	diagram_ (d),
+	context_ (nc),
+	strategy_ (NULL)
+{}
+
+/**
+ * @brief Destructor
+ */
+NumerotationContextCommands::~NumerotationContextCommands() {
+	if (strategy_) delete strategy_;
+}
+
+/**
+ * @brief NumerotationContextCommands::next
+ * @return the next numerotation context
+ */
+NumerotationContext NumerotationContextCommands::next() {
+	NumerotationContext contextnum;
+
+	for (int i=0; i<context_.size(); ++i) {
+		QStringList str = context_.itemAt(i);
+		setNumStrategy(str.at(0));
+		contextnum << strategy_ -> next(context_, i);
+	}
+	return contextnum;
+}
+
+/**
+ * @brief NumerotationContextCommands::toFinalString
+ * @return the string represented by the numerotation context
+ */
+QString NumerotationContextCommands::toRepresentedString() {
+	QString num;
+	if (context_.size()) {
+		for (int i=0; i<context_.size(); i++) {
+			QStringList  str = context_.itemAt(i);
+			setNumStrategy(str.at(0));
+			num += strategy_ -> toRepresentedString(str.at(1));
+		}
+		return num;
+	}
+	return (diagram_ -> defaultConductorProperties.text);
+}
+
+/**
+ * @brief NumerotationContextCommands::setNumStrategy
+ * apply the good strategy relative to @str
+ */
+void NumerotationContextCommands::setNumStrategy(const QString &str) {
+	if (strategy_) delete strategy_;
+	if (str == "unit") {
+		strategy_ = new UnitNum(diagram_);
+		return;
+	}
+	else if (str == "ten") {
+		strategy_ = new TenNum (diagram_);
+		return;
+	}
+	else if (str == "hundred") {
+		strategy_ = new HundredNum (diagram_);
+		return;
+	}
+	else if (str == "string") {
+		strategy_ = new StringNum (diagram_);
+		return;
+	}
+	else if (str == "folio") {
+		strategy_ = new FolioNum (diagram_);
+		return;
+	}
+}
+
+
+
+/**
+ * Constructor
+ */
+NumStrategy::NumStrategy (Diagram *d):
+	diagram_ (d)
+{}
+
+NumStrategy::~NumStrategy() {}
+
+/**
+ * @brief NumStrategy::nextString
+ * @return the next value of @nc at position @i
+ */
+NumerotationContext NumStrategy::nextString (const NumerotationContext &nc, const int i) const {
+	QStringList strl = nc.itemAt(i);
+	NumerotationContext newnc;
+	newnc.addValue(strl.at(0), strl.at(1), strl.at(2).toInt());
+	return (newnc);
+}
+
+/**
+ * @brief NumStrategy::nextNumber
+ * @return the next value of @nc at position @i
+ */
+NumerotationContext NumStrategy::nextNumber (const NumerotationContext &nc, const int i) const {
+	QStringList strl = nc.itemAt(i);
+	NumerotationContext newnc;
+	QString value = QString::number( (strl.at(1).toInt()) + (strl.at(2).toInt()) );
+	newnc.addValue(strl.at(0), value, strl.at(2).toInt());
+	return (newnc);
+}
+
+/**
+ * Constructor
+ */
+UnitNum::UnitNum(Diagram *d):
+	NumStrategy(d)
+{}
+
+/**
+ * @brief UnitNum::toRepresentedString
+ * @return the represented string of num
+ */
+QString UnitNum::toRepresentedString(const QString num) const {
+	return (num);
+}
+
+/**
+ * @brief UnitNum::next
+ * @return the next NumerotationContext nc at position i
+ */
+NumerotationContext UnitNum::next (const NumerotationContext &nc, const int i) const {
+	return (nextNumber(nc, i));
+}
+
+/**
+ * Constructor
+ */
+TenNum::TenNum (Diagram *d):
+	NumStrategy (d)
+{}
+
+/**
+ * @brief TenNum::toRepresentedString
+ * @return the represented string of num
+ */
+QString TenNum::toRepresentedString(const QString num) const {
+	int numint = num.toInt();
+	QString numstr = num;
+	if (numint<10) numstr.prepend("0");
+	return (numstr);
+}
+
+/**
+ * @brief TenNum::next
+ * @return the next NumerotationContext nc at position i
+ */
+NumerotationContext TenNum::next (const NumerotationContext &nc, const int i) const {
+	return (nextNumber(nc, i));
+}
+
+/**
+ * Constructor
+ */
+HundredNum::HundredNum (Diagram *d):
+	NumStrategy (d)
+{}
+
+/**
+ * @brief HundredNum::toRepresentedString
+ * @return the represented string of num
+ */
+QString HundredNum::toRepresentedString(const QString num) const {
+	int numint = num.toInt();
+	QString numstr = num;
+	if (numint<100) {
+		if (numint<10) {
+			numstr.prepend("00");
+		}
+		else numstr.prepend("0");
+	}
+	return (numstr);
+}
+
+/**
+ * @brief HundredNum::next
+ * @return the next NumerotationContext nc at position i
+ */
+NumerotationContext HundredNum::next (const NumerotationContext &nc, const int i) const {
+	return (nextNumber(nc, i));
+}
+
+/**
+ * Constructor
+ */
+StringNum::StringNum (Diagram *d):
+	NumStrategy (d)
+{}
+
+/**
+ * @brief StringNum::toRepresentedString
+ * @return the represented string of num
+ */
+QString StringNum::toRepresentedString(const QString str) const {
+	return (str);
+}
+
+/**
+ * @brief StringNum::next
+ * @return the next NumerotationContext nc at position i
+ */
+NumerotationContext StringNum::next (const NumerotationContext &nc, const int i) const {
+	return (nextString(nc, i));
+}
+
+
+/**
+ * Constructor
+ */
+FolioNum::FolioNum (Diagram *d):
+	NumStrategy (d)
+{}
+
+/**
+ * @brief FolioNum::toRepresentedString
+ * @return the represented string of num
+ */
+QString FolioNum::toRepresentedString(const QString str) const {
+	return (QString::number(diagram_ -> folioIndex() + 1));
+}
+
+/**
+ * @brief FolioNum::next
+ * @return the next NumerotationContext nc at position i
+ */
+NumerotationContext FolioNum::next (const NumerotationContext &nc, const int i) const {
+	return (nextString(nc, i));
+}
+
diff --git a/sources/numerotationcontextcommands.h b/sources/numerotationcontextcommands.h
new file mode 100644
index 000000000..cf434bb82
--- /dev/null
+++ b/sources/numerotationcontextcommands.h
@@ -0,0 +1,83 @@
+#ifndef NUMEROTATIONCONTEXTCOMMANDS_H
+#define NUMEROTATIONCONTEXTCOMMANDS_H
+
+#include "numerotationcontext.h"
+#include "diagram.h"
+
+class NumStrategy;
+
+/**
+ * this class provide methods to handle content of NumerotationContext.
+ */
+class NumerotationContextCommands
+{
+	public:
+	NumerotationContextCommands (Diagram *, const NumerotationContext &);
+	~NumerotationContextCommands ();
+	NumerotationContext next ();
+	QString toRepresentedString ();
+
+	private:
+	void setNumStrategy (const QString &);
+
+	Diagram *diagram_;
+	NumerotationContext context_;
+	NumStrategy *strategy_;
+};
+
+class NumStrategy
+{
+	public:
+	NumStrategy (Diagram *);
+	virtual ~NumStrategy ();
+	virtual QString toRepresentedString (const QString) const = 0;
+	virtual NumerotationContext next (const NumerotationContext &, const int) const = 0;
+
+	protected:
+	NumerotationContext nextString (const NumerotationContext &, const int) const;
+	NumerotationContext nextNumber (const NumerotationContext &, const int) const;
+
+	Diagram *diagram_;
+};
+
+class UnitNum: public NumStrategy
+{
+	public:
+	UnitNum (Diagram *);
+	QString toRepresentedString(const QString) const;
+	NumerotationContext next (const NumerotationContext &, const int) const;
+};
+
+class TenNum: public NumStrategy
+{
+	public:
+	TenNum (Diagram *);
+	QString toRepresentedString(const QString) const;
+	NumerotationContext next (const NumerotationContext &, const int) const;
+};
+
+class HundredNum: public NumStrategy
+{
+	public:
+	HundredNum (Diagram *);
+	QString toRepresentedString(const QString) const;
+	NumerotationContext next (const NumerotationContext &, const int) const;
+};
+
+class StringNum: public NumStrategy
+{
+	public:
+	StringNum (Diagram *);
+	QString toRepresentedString(const QString) const;
+	NumerotationContext next (const NumerotationContext &, const int) const;
+};
+
+class FolioNum: public NumStrategy
+{
+	public:
+	FolioNum (Diagram *);
+	QString toRepresentedString(const QString) const;
+	NumerotationContext next (const NumerotationContext &, const int) const;
+};
+
+#endif // NUMEROTATIONCONTEXTCOMMANDS_H