diff --git a/IDT.js b/IDT.js
index 46f6067..355ff3f 100644
--- a/IDT.js
+++ b/IDT.js
@@ -19,29 +19,50 @@
 */
 
 /*@cc_on @*/
-/*@if (! @__IDT_JS__) @*/
-/*@set @__IDT_JS__ = true @*/
+/*@if (! @_escapeIDT_JS__) @*/
+/*@set @_escapeIDT_JS__ = true @*/
 
-
-function CodePageToId(codepage)
+var escapeIDT_stat = null;
+function escapeIDT(str)
 {
-	switch (codepage) {
-		case 932 : return "shift-jis";
-		case 936 : return "gb2312";
-		case 949 : return "euc-kr";
-		case 950 : return "big5";
-		case 874 :
-		case 1250:
-		case 1251:
-		case 1252:
-		case 1253:
-		case 1254:
-		case 1255:
-		case 1256:
-		case 1257:
-		case 1258: return "windows-" + codepage;
-		default  : throw new Error("Unsupported code page.");
+	if (!escapeIDT_stat) {
+		escapeIDT_stat = {
+			"re_lf":     new RegExp("\n", "g"),
+			"re_cr":     new RegExp("\r", "g"),
+			"re_tab":    new RegExp("\t", "g")
+		};
 	}
+
+	if (str == null) return null;
+	switch (typeof(str)) {
+		case "string":    break;
+		case "undefined": return null;
+		default:          try { str = str.toString(); } catch (err) { return null; }
+	}
+
+	return str.replace(escapeIDT_stat.re_lf, "\\n").replace(escapeIDT_stat.re_cr, "\\r").replace(escapeIDT_stat.re_tab, "\\t");
+}
+
+
+var unescapeIDT_stat = null;
+function unescapeIDT(str)
+{
+	if (!unescapeIDT_stat) {
+		unescapeIDT_stat = {
+			"re_lf":     new RegExp("\\\\n", "g"),
+			"re_cr":     new RegExp("\\\\r", "g"),
+			"re_tab":    new RegExp("\\\\t", "g")
+		};
+	}
+
+	if (str == null) return null;
+	switch (typeof(str)) {
+		case "string":    break;
+		case "undefined": return null;
+		default:          try { str = str.toString(); } catch (err) { return null; }
+	}
+
+	return str.replace(unescapeIDT_stat.re_lf, "\n").replace(unescapeIDT_stat.re_cr, "\r").replace(unescapeIDT_stat.re_tab, "\t");
 }
 
 
@@ -53,7 +74,7 @@ function IDT(path)
 
 	dat.Open();
 	try {
-		// IDT is text file, uses CRLF line breaks and Windows 1252 header.
+		// IDT is text file, uses MSDOS line breaks and Windows 1252 header.
 		dat.Type = adTypeText;
 		dat.LineSeparator = adCRLF;
 		dat.Charset = "windows-1252";
@@ -63,7 +84,7 @@ function IDT(path)
 
 		var parseRow = function(row) {
 			for (var col in row)
-				row[col] = CRLF2LF(_unC(row[col]));
+				row[col] = CRLF2LF(unescapeIDT(row[col]));
 			return row;
 		}
 
@@ -93,32 +114,76 @@ function IDT(path)
 		dat.Charset = CodePageToId(this.codepage);
 
 		// Skip header.
-		dat.ReadText(adReadLine);
-		dat.ReadText(adReadLine);
-		dat.ReadText(adReadLine);
+		dat.SkipLine();
+		dat.SkipLine();
+		dat.SkipLine();
 
 		// Parse data and build associative array.
 		this.data = new Array();
+		this.linenum = new Array();
+		var linenum = 4;
 		while (!dat.EOS) {
 			line = parseRow(dat.ReadText(adReadLine).split("\t"));
 			var key = new Array();
 			for (var i in this.key)
 				key.push(line[this.key[i]]);
 			this.data[key] = line;
+			this.linenum[key] = linenum++;
 		}
 	} finally {
 		dat.Close();
 	}
 }
 
+
+IDT.prototype.save = function(path)
+{
+	// Build output IDT file in memory.
+	var dat = WScript.CreateObject("ADODB.Stream");
+	dat.Open();
+	try {
+		// IDT is text file, uses MSDOS line breaks, and specific encoding (optional).
+		dat.Type = adTypeText;
+		dat.LineSeparator = adCRLF;
+		if ("codepage" in this)
+			dat.Charset = CodePageToId(this.codepage);
+
+		var buildRow = function(row) {
+			for (var col in row)
+				row[col] = escapeIDT(LF2CRLF(row[col]));
+			return row;
+		}
+
+		// Write header.
+		dat.WriteText(buildRow(this.columns).join("\t"), adWriteLine);
+		dat.WriteText(buildRow(this.types  ).join("\t"), adWriteLine);
+		var meta = new Array();
+		if (WScript.Arguments.Named.Exists("CP"))
+			meta.push(WScript.Arguments.Named("CP"));
+		meta.push(this.table);
+		for (var key in this.key)
+			meta.push(this.columns[this.key[key]]);
+		dat.WriteText(buildRow(meta).join("\t"), adWriteLine);
+
+		// Save data.
+		for (var key in this.data)
+			dat.WriteText(buildRow(this.data[key]).join("\t"), adWriteLine);
+
+		// Save to file.
+		dat.SaveToFile(path, adSaveCreateOverWrite);
+	} finally {
+		dat.Close();
+	}
+}
+
 /*@end @*/
 
 // SIG // Begin signature block
 // SIG // MIIXmAYJKoZIhvcNAQcCoIIXiTCCF4UCAQExCzAJBgUr
 // SIG // DgMCGgUAMGcGCisGAQQBgjcCAQSgWTBXMDIGCisGAQQB
 // SIG // gjcCAR4wJAIBAQQQEODJBs441BGiowAQS9NQkAIBAAIB
-// SIG // AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFM8VLy9MohNO
-// SIG // CzcQIdkRVyOGdiKcoIISyDCCA+4wggNXoAMCAQICEH6T
+// SIG // AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFDK3v7xPfQA4
+// SIG // KZZoKH2KE80Twx3HoIISyDCCA+4wggNXoAMCAQICEH6T
 // SIG // 6/t8xk5Z6kuad9QG/DswDQYJKoZIhvcNAQEFBQAwgYsx
 // SIG // CzAJBgNVBAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENh
 // SIG // cGUxFDASBgNVBAcTC0R1cmJhbnZpbGxlMQ8wDQYDVQQK
@@ -272,30 +337,30 @@ function IDT(path)
 // SIG // OWQwCQYFKw4DAhoFAKBwMBAGCisGAQQBgjcCAQwxAjAA
 // SIG // MBkGCSqGSIb3DQEJAzEMBgorBgEEAYI3AgEEMBwGCisG
 // SIG // AQQBgjcCAQsxDjAMBgorBgEEAYI3AgEVMCMGCSqGSIb3
-// SIG // DQEJBDEWBBTfJgGHRKQ2tinqe14PycjEqCboeTANBgkq
-// SIG // hkiG9w0BAQEFAASCAQAdZIIOXCs3tEP8LMe5TFe9UL1d
-// SIG // A+9n5HmR9CglRlSImbMohrztrWc2aSZ/G3ITRUdsszHV
-// SIG // smqtKGN6Ci6nosFuvrMdRLIqx6xQt/DpBTPPMd0VARGJ
-// SIG // uR6sZP77IR0zoLnIKxhW7dZe3GEM5sZbuHE0xWOb+ZVB
-// SIG // +5GNoXiCZLN8YO2P+QOrG0csrcL21sZUP1PLYHCUTjt3
-// SIG // 9Mz/0WfSh8Y5YE/LKeFFrx6xWZRPzQOk9pnxO/oQUjkS
-// SIG // orbbKtB7X0eSWY+tQBwEblFTlxZpVQZYjzI6o3jHN5xy
-// SIG // 7ILoVfXXoI/dJi83/WSuK8p4IIWR3Z050SWjpdRsSpja
-// SIG // QPqiM5NjoYICCzCCAgcGCSqGSIb3DQEJBjGCAfgwggH0
+// SIG // DQEJBDEWBBT3K5DzXHaaaztTUWYcKscHz5goHTANBgkq
+// SIG // hkiG9w0BAQEFAASCAQBCIQ7y8ZVmNZke0OJsfe38h/25
+// SIG // VCuB1bCSqiqF7+el2gXbKcQSMSpbF+PqG6HjtzMiFncJ
+// SIG // myApTJ+AyBh8ScoRwa+XoOeIV+TPwW2UKy1FUUJ7TAi7
+// SIG // /R7LhYq2xuhcAt6S0kxXy/qDJhhhPSXovi1d1dlNHINT
+// SIG // wPy9yPeTqD8eSug3xYvt6rsKtQEqJyITIjeU4YIQWDDw
+// SIG // UfdCLhybrtbvyZ881KICrkol/u3DzPF6L9CiHayFYXUO
+// SIG // ToJOGPiGOAedHLWFpFG0QdYZvQogtzZcYuFtZWbTx/ud
+// SIG // SSXr5BOydkUZ0qjAQoIWuUZbdhGfPoVGQOPUzQVChKYj
+// SIG // yn/1DQrfoYICCzCCAgcGCSqGSIb3DQEJBjGCAfgwggH0
 // SIG // AgEBMHIwXjELMAkGA1UEBhMCVVMxHTAbBgNVBAoTFFN5
 // SIG // bWFudGVjIENvcnBvcmF0aW9uMTAwLgYDVQQDEydTeW1h
 // SIG // bnRlYyBUaW1lIFN0YW1waW5nIFNlcnZpY2VzIENBIC0g
 // SIG // RzICEA7P9DjI/r81bgTYapgbGlAwCQYFKw4DAhoFAKBd
 // SIG // MBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZI
-// SIG // hvcNAQkFMQ8XDTE2MDkxNTA5NTQxNlowIwYJKoZIhvcN
-// SIG // AQkEMRYEFOYsLSnDfzdhw/4I8pCP0bgfeIz9MA0GCSqG
-// SIG // SIb3DQEBAQUABIIBAJqxWik7hDX5hTBagi4lQlhzhvTA
-// SIG // y/771WsTQ/zKHfcxmS4ArMbZuuabEMnit58NmX7FAzij
-// SIG // U7I+i/bnLl/PArICQ/CSUAG6gfyQY02hMdq82zdsX5yd
-// SIG // me13e/4YHxSigRnr+k90BbvkKRbdEWgRgxLMhe/WAZ/W
-// SIG // wM7VucTmX4MpcX5eUa85rsUkLMicl2dpGBV8X1cZaA79
-// SIG // Tv3vpQPiXQ2OMr+Mew6ZL687pYVxOLgnG4WYNZxopoeG
-// SIG // 9n/wZL0iHWQSxB5sQCyEBztGxDjCxKGKyy9XSVzXC3L+
-// SIG // 0Ax68XmDRzh0ntkIo3oPCQscaVEgh8PI0ZwlY66u1phb
-// SIG // BtAzkCM=
+// SIG // hvcNAQkFMQ8XDTE2MDkxNjEyMzczMlowIwYJKoZIhvcN
+// SIG // AQkEMRYEFHa81Osey4h4aGVWL2y16ek6c50BMA0GCSqG
+// SIG // SIb3DQEBAQUABIIBAIyk3446yLyAYUB/wxL7SYuRdyBQ
+// SIG // zVPGxWbW73lgTAPzWMqWVtkEOPEe1z6T1us5Ss9OFQ8g
+// SIG // P3VbDUfvIxNA2q0a2Z+GgS8tyrlQK1WswLdv11mmVmGa
+// SIG // c4+FG5pZu0KEHkzAhTfq6H6DPg+fz46OTCyxYaNIYzHp
+// SIG // azs8tyylmjFS9jEo57Fo+Px23ISqEmBsGVx8vEMY0+N7
+// SIG // UOh1sVj8XTHrZi9DHAvs+JX1o5XcYW+9tRiQshrXgba6
+// SIG // QVSb21e5G7lPMPWD1tGLfbCqKhDYqHFCy5RnQbfYaWTh
+// SIG // ZnjfmfQ9+/2MWbRdFNqscheuMcasYaEQWFsTiMV/p7D6
+// SIG // MP2TGpo=
 // SIG // End signature block
diff --git a/MSI.wsf b/MSI.wsf
index a4f4404..5812075 100644
--- a/MSI.wsf
+++ b/MSI.wsf
@@ -458,15 +458,95 @@
 	</job>
 	<job id="IDT2PO">
 		<runtime>
-			<description>Extract strings to translate by comparing two IDT files.</description>
-			<unnamed name="&lt;source.idt&gt;" helpstring="Original IDT file" required="true"/>
-			<unnamed name="&lt;destination.idt&gt;" helpstring="Translated IDT file" required="true"/>
+			<description>Extract strings to translate. If already translated IDT file is available, extract translations of matching rows (by IDT key column(s)).</description>
 			<unnamed name="&lt;output.po&gt;" helpstring="Output PO file" required="true"/>
+			<unnamed name="&lt;source.idt&gt;" helpstring="Original IDT file" required="true"/>
+			<unnamed name="&lt;destination.idt&gt;" helpstring="Translated IDT file" required="false"/>
 			<named name="L" helpstring="Language identifier" type="string" required="false"/>
 		</runtime>
 		<reference object="ADODB.Stream"/>
 		<reference object="Scripting.FileSystemObject"/>
 		<script language="JScript" src="IDT.js"/>
+		<script language="JScript" src="PO.js"/>
+		<script language="JScript" src="String.js"/>
+		<script language="JScript"><![CDATA[
+			if (WScript.Arguments.Unnamed.Length < 2) {
+				WScript.Arguments.ShowUsage();
+				WScript.Quit(1);
+			}
+
+			var
+				fso     = WScript.CreateObject("Scripting.FileSystemObject"),
+				po_path = WScript.Arguments.Unnamed(0);
+
+			try {
+				// Open and parse IDT file(s).
+				var
+					idt_src_path = WScript.Arguments.Unnamed(1),
+					idt_src      = new IDT(idt_src_path),
+					idt_dst;
+
+				if (WScript.Arguments.Unnamed.Length >= 3) {
+					idt_dst = new IDT(WScript.Arguments.Unnamed(2));
+
+					// IDT files must represent identical table.
+					if (idt_src.columns.toString() != idt_dst.columns.toString() ||
+						idt_src.types  .toString() != idt_dst.types  .toString() ||
+						idt_src.table              != idt_dst.table              ||
+						idt_src.key    .toString() != idt_dst.key    .toString())
+						throw new Error("IDT files are not compatible.");
+				} else
+					idt_dst = null;
+
+				var po = new POCatalog();
+
+				// Add header.
+				po.push("",
+					"MIME-Version: 1.0\n" +
+					"Content-Type: text/plain; charset=" + po.charset + "\n" +
+					"Content-Transfer-Encoding: 8bit\n" +
+					(WScript.Arguments.Named.Exists("L") ? "Language: "+ WScript.Arguments.Named("L") +"\n" : ""), false);
+
+				// Build translations.
+				for (var key in idt_src.data) {
+					if (idt_dst != null && (key in idt_dst.data)) {
+						// We found a record in both IDT files.
+						for (var col in idt_src.types)
+							if (idt_src.types[col].charAt(0).toUpperCase() == "L" && idt_src.data[key][col] != "")
+								po.push(idt_src.data[key][col], idt_dst.data[key][col], false, "#: " + idt_src_path + ":" + idt_src.linenum[key]);
+					} else {
+						// The record is available in the source IDT file only (or there is no destination IDT).
+						for (var col in idt_src.types)
+							if (idt_src.types[col].charAt(0).toUpperCase() == "L" && idt_src.data[key][col] != "")
+								po.push(idt_src.data[key][col], "", false, "#: " + idt_src_path + ":" + idt_src.linenum[key]);
+					}
+				}
+
+				// Save to file.
+				po.save(po_path);
+			} catch (err) {
+				// In case of error, delete output file.
+				if (fso.FileExists(po_path))
+					fso.DeleteFile(po_path);
+
+				throw err;
+			}
+
+			WScript.Quit(0);
+		]]></script>
+	</job>
+	<job id="IDTTranslate">
+		<runtime>
+			<description>Translate IDT file.</description>
+			<unnamed name="&lt;destination.idt&gt;" helpstring="Translated IDT file" required="true"/>
+			<unnamed name="&lt;source.idt&gt;" helpstring="Original IDT file" required="true"/>
+			<unnamed name="&lt;catalogue.po&gt;" helpstring="PO catalog file with translations" required="true"/>
+			<named name="CP" helpstring="Output code page" type="string" required="false"/>
+		</runtime>
+		<reference object="ADODB.Stream"/>
+		<reference object="Scripting.FileSystemObject"/>
+		<script language="JScript" src="IDT.js"/>
+		<script language="JScript" src="PO.js"/>
 		<script language="JScript" src="String.js"/>
 		<script language="JScript"><![CDATA[
 			if (WScript.Arguments.Unnamed.Length < 3) {
@@ -475,77 +555,30 @@
 			}
 
 			var
-				fso     = WScript.CreateObject("Scripting.FileSystemObject"),
-				po_path = WScript.Arguments.Unnamed(2);
+				fso          = WScript.CreateObject("Scripting.FileSystemObject"),
+				idt_dst_path = WScript.Arguments.Unnamed(0);
 
 			try {
-				// Open and parse IDT files.
+				// Open and parse source IDT file and PO catalogue.
 				var
-					idt_src = new IDT(WScript.Arguments.Unnamed(0)),
-					idt_dst = new IDT(WScript.Arguments.Unnamed(1));
+					idt_src = new IDT(WScript.Arguments.Unnamed(1)),
+					po      = new POCatalog(WScript.Arguments.Unnamed(2));
 
-				// IDT files must represent identical table.
-				if (idt_src.columns.toString() != idt_dst.columns.toString() ||
-				    idt_src.types  .toString() != idt_dst.types  .toString() ||
-				    idt_src.table              != idt_dst.table              ||
-				    idt_src.key    .toString() != idt_dst.key    .toString())
-					throw new Error("IDT files are not compatible.");
-
-				// Build translations.
-				var trans = new Array();
+				// Translate records.
 				for (var key in idt_src.data) {
-					if (key in idt_dst.data) {
-						// We found a record in both IDT files.
-						for (var col in idt_src.types) {
-							if (idt_src.types[col].charAt(0).toUpperCase() == "L" && idt_src.data[key][col] != "" && idt_dst.data[key][col] != "")
-								trans[idt_src.data[key][col]] = idt_dst.data[key][col];
-						}
+					for (var col in idt_src.types) {
+						if (idt_src.types[col].charAt(0).toUpperCase() == "L" && idt_src.data[key][col] != "")
+							idt_src.data[key][col] = po.translate(idt_src.data[key][col]);
 					}
 				}
 
-				// Add header.
-				trans[""] =
-					"MIME-Version: 1.0\n" +
-					"Content-Type: text/plain; charset=UTF-8\n" +
-					"Content-Transfer-Encoding: 8bit\n" +
-					(WScript.Arguments.Named.Exists("L") ? "Language: "+ WScript.Arguments.Named("L") +"\n" : "");
-
-				// Open PO file in memory.
-				var po_dat_tmp = WScript.CreateObject("ADODB.Stream");
-				po_dat_tmp.Open();
-				try {
-					// PO is text file, uses Unix line breaks and UTF-8 encoding.
-					po_dat_tmp.Type = adTypeText;
-					po_dat_tmp.LineSeparator = adLF;
-					po_dat_tmp.Charset = "utf-8";
-
-					for (var rec in trans) {
-						po_dat_tmp.WriteText("msgid \""  + _PO(      rec ) + "\"", adWriteLine);
-						po_dat_tmp.WriteText("msgstr \"" + _PO(trans[rec]) + "\"", adWriteLine);
-						po_dat_tmp.WriteText("", adWriteLine);
-					}
-
-					// Write to file without UTF-8 BOM.
-					var po_dat = WScript.CreateObject("ADODB.Stream");
-					po_dat.Type = adTypeBinary;
-					po_dat.Mode = adModeReadWrite;
-					po_dat.Open();
-					try {
-						// Skip BOM (first three bytes) and copy the rest.
-						po_dat_tmp.Position = 3;
-						po_dat_tmp.CopyTo(po_dat);
-
-						po_dat.SaveToFile(po_path, adSaveCreateOverWrite);
-					} finally {
-						po_dat.Close();
-					}
-				} finally {
-					po_dat_tmp.Close();
-				}
+				if (WScript.Arguments.Named.Exists("CP"))
+					idt_src.codepage = parseInt(WScript.Arguments.Named("CP"), 10);
+				idt_src.save(idt_dst_path);
 			} catch (err) {
 				// In case of error, delete output file.
-				if (fso.FileExists(po_path))
-					fso.DeleteFile(po_path);
+				if (fso.FileExists(idt_dst_path))
+					fso.DeleteFile(idt_dst_path);
 
 				throw err;
 			}
@@ -576,8 +609,8 @@
 ** SIG ** MIIXmAYJKoZIhvcNAQcCoIIXiTCCF4UCAQExCzAJBgUr
 ** SIG ** DgMCGgUAMGcGCisGAQQBgjcCAQSgWTBXMDIGCisGAQQB
 ** SIG ** gjcCAR4wJAIBAQQQcAVhGs441BGiowAQS9NQkAIBAAIB
-** SIG ** AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFPA0F7YWxPGa
-** SIG ** aaKC2NHNwBJi9fvvoIISyDCCA+4wggNXoAMCAQICEH6T
+** SIG ** AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFBFS1Dc0BFx7
+** SIG ** 6vYeYiyIGC1cPCcBoIISyDCCA+4wggNXoAMCAQICEH6T
 ** SIG ** 6/t8xk5Z6kuad9QG/DswDQYJKoZIhvcNAQEFBQAwgYsx
 ** SIG ** CzAJBgNVBAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENh
 ** SIG ** cGUxFDASBgNVBAcTC0R1cmJhbnZpbGxlMQ8wDQYDVQQK
@@ -731,31 +764,31 @@
 ** SIG ** OWQwCQYFKw4DAhoFAKBwMBAGCisGAQQBgjcCAQwxAjAA
 ** SIG ** MBkGCSqGSIb3DQEJAzEMBgorBgEEAYI3AgEEMBwGCisG
 ** SIG ** AQQBgjcCAQsxDjAMBgorBgEEAYI3AgEVMCMGCSqGSIb3
-** SIG ** DQEJBDEWBBRlb6oTWBq6akVrgx27UItStgXvjjANBgkq
-** SIG ** hkiG9w0BAQEFAASCAQBJaRJTWHHN/P3WZVZb+RtVDElR
-** SIG ** bePmsJHgWffw3iOdfRFv6g1lMS8e6N7/DmY0pVMoJKZe
-** SIG ** l4THbgsPh6pDF7l473LnDS6B05WLbq9qxFMc8xtDbsLy
-** SIG ** 6HHWUfVDhlAV519egugXvA3XnDvVlboVgtpI++TVSg90
-** SIG ** w2qCOCzDLU1B9K+4f20QQvK0HMJQwND5wBRBj3TXALbM
-** SIG ** JKZthUbMN6Xc0nCppuv2luHTbE8/GZc6ZAMi0MckfaLf
-** SIG ** ii1bdx/2gOqQ0s/a06kiLuJpjQcs0cezf1+BsbNAGOcH
-** SIG ** E2uXa6RR5ZhDAdrIJkG38y/5FmNSLixEeD2VpsFXMrM6
-** SIG ** vN12aXCeoYICCzCCAgcGCSqGSIb3DQEJBjGCAfgwggH0
+** SIG ** DQEJBDEWBBS+6SF1g2JrK4rp+O3L8qwB8cicdDANBgkq
+** SIG ** hkiG9w0BAQEFAASCAQAUJ11IjJjmGNrCZkBHUPzPUspV
+** SIG ** 9z7eS08u30ORQ4Rl9otiIg4HJUeEfnQyG2O3w1xmOvwJ
+** SIG ** w1qeAgNttl4+Bj2mUBY8QFLy0HubXMLEPQBDTZ7f/pSg
+** SIG ** yYE+pSqciCGCYrAFWkucH/ui0S/gfxZnBbM9K1AjRDRW
+** SIG ** B9oMbRx9yY2URqHachNKZ+LTGBPhVuiLy245Nw4uuLe8
+** SIG ** i9bX2kEV8XPUSanko0mtY7h06b4n2b90Buby+4TId9hC
+** SIG ** BerBnjrAbYS0c+Ra3GMURtCbGbAzmg8ixR/kg0IPF1wu
+** SIG ** QNqrhnw2yWJXhnTEZm5HPQVYISl8QkO3TFcfHBxkb/Oe
+** SIG ** QRR/NYwboYICCzCCAgcGCSqGSIb3DQEJBjGCAfgwggH0
 ** SIG ** AgEBMHIwXjELMAkGA1UEBhMCVVMxHTAbBgNVBAoTFFN5
 ** SIG ** bWFudGVjIENvcnBvcmF0aW9uMTAwLgYDVQQDEydTeW1h
 ** SIG ** bnRlYyBUaW1lIFN0YW1waW5nIFNlcnZpY2VzIENBIC0g
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 ** SIG ** MBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZI
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-** SIG ** 4ratGN7hPoJe+RxndAtJCjLIsvpKKkTiaPDtqum+1yyV
-** SIG ** bSdt9G0=
+** SIG ** hvcNAQkFMQ8XDTE2MDkxNjEyMzgwM1owIwYJKoZIhvcN
+** SIG ** AQkEMRYEFASd3svY6QexmPrwyTgYM37i8CbtMA0GCSqG
+** SIG ** SIb3DQEBAQUABIIBAA5YzP22hUvXvFxoEB/NGRSxYN1r
+** SIG ** ruCy/XfTOs6MaML1by7TpUR0ID6NxEibSEiL8LdjKl1F
+** SIG ** eQUksNz3i7knlXzjbt76IWJIwszJg1kfhvpnBOk+lIW+
+** SIG ** Yl75P+Is3XO/6B7W2S9zon8qlLg8aK3pjBvq/bCfhqrB
+** SIG ** jY8IbgTY4nv5onMF4WaC5/MXI6/N2Eb6RWuH2Ywd7xlk
+** SIG ** qiahhIey5Z8IZLuEVAH+PiZV89wf23t/OnmhKcgkNwHU
+** SIG ** 7fe8PUq8H+2LB+kA43JWmgDoy5rjTxgr6u/KGBIn4wVg
+** SIG ** +WqvhbRk/EF994ZtE5vMg4lqMTOiUmvJoTJVOZd6pQlL
+** SIG ** K7/akzU=
 </signature>
 </package>
diff --git a/PO.js b/PO.js
new file mode 100644
index 0000000..ed66fcf
--- /dev/null
+++ b/PO.js
@@ -0,0 +1,454 @@
+/*
+    Copyright 1991-2015 Amebis
+    Copyright 2016 GÉANT
+
+    This file is part of MSIBuild.
+
+    MSIBuild is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    MSIBuild is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with MSIBuild. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*@cc_on @*/
+/*@if (! @_escapePO_JS__) @*/
+/*@set @_escapePO_JS__ = true @*/
+
+
+var escapePO_stat = null;
+function escapePO(str)
+{
+	if (!escapePO_stat) {
+		escapePO_stat = {
+			"re_bslash": new RegExp("\\\\", "g"),
+			"re_bs":     new RegExp("\b",   "g"),
+			"re_ff":     new RegExp("\f",   "g"),
+			"re_lf":     new RegExp("\n",   "g"),
+			"re_cr":     new RegExp("\r",   "g"),
+			"re_tab":    new RegExp("\t",   "g"),
+			"re_quot":   new RegExp("\"",   "g")
+		};
+	}
+
+	if (str == null) return null;
+	switch (typeof(str)) {
+		case "string":    break;
+		case "undefined": return null;
+		default:          try { str = str.toString(); } catch (err) { return null; }
+	}
+
+	return str.replace(escapePO_stat.re_bslash, "\\\\").replace(escapePO_stat.re_bs, "\\b").replace(escapePO_stat.re_ff, "\\f").replace(escapePO_stat.re_lf, "\\n").replace(escapePO_stat.re_cr, "\\r").replace(escapePO_stat.re_tab, "\\t").replace(escapePO_stat.re_quot, "\\\"");
+}
+
+
+var unescapePO_stat = null;
+function unescapePO(str)
+{
+	if (!unescapePO_stat) {
+		unescapePO_stat = {
+			"re_bslash": new RegExp("\\\\\\\\", "g"),
+			"re_bs":     new RegExp("\\\\b",    "g"),
+			"re_ff":     new RegExp("\\\\f",    "g"),
+			"re_lf":     new RegExp("\\\\n",    "g"),
+			"re_cr":     new RegExp("\\\\r",    "g"),
+			"re_tab":    new RegExp("\\\\t",    "g"),
+			"re_apost":  new RegExp("\\\\\\\'", "g"),
+			"re_quot":   new RegExp("\\\\\\\"", "g")
+		};
+	}
+
+	if (str == null) return null;
+	switch (typeof(str)) {
+		case "string":    break;
+		case "undefined": return null;
+		default:          try { str = str.toString(); } catch (err) { return null; }
+	}
+
+	return str.replace(unescapePO_stat.re_bslash, "\\").replace(unescapePO_stat.re_bs, "\b").replace(unescapePO_stat.re_ff, "\f").replace(unescapePO_stat.re_lf, "\n").replace(unescapePO_stat.re_cr, "\r").replace(unescapePO_stat.re_tab, "\t").replace(unescapePO_stat.re_apost, "\'").replace(unescapePO_stat.re_quot, "\"");
+}
+
+
+function POCatalog()
+{
+	this.charset = "utf-8";
+	this.data = new Array();
+
+	if (arguments.length) {
+		var
+			path = arguments[0];
+
+		// Open file.
+		var dat = new ActiveXObject("ADODB.Stream");
+		dat.Open();
+		try {
+			// PO catalogue is text file, uses Unix line breaks and UTF-8.
+			dat.Type = adTypeText;
+			dat.LineSeparator = adLF;
+			dat.Charset = this.charset;
+
+			// Load file.
+			dat.LoadFromFile(path);
+
+			// Prepare regular expressions for catalogue parsing.
+			var regexp = {
+				"fuzzy":   new RegExp("^\\s*#,\\s*fuzzy", "i"),
+				"comment": new RegExp("^\\s*#", ""),
+				"record":  new RegExp("^\\s*(\\w*)\\s*\"(.*)\"\\s*$", "")
+			};
+
+			var getNext = function() {
+				var
+					id = null,
+					rec = new Array();
+
+				while (!dat.EOS) {
+					var
+						s = Trim(dat.ReadText(adReadLine)),
+						m;
+
+					// The line is empty => end of record.
+					if (s == "" && "msgid" in rec)
+						return rec;
+
+					// The record is marked as "fuzzy".
+					if (s.search(regexp.fuzzy) != -1) {
+						rec["fuzzy"] = true;
+						continue;
+					}
+
+					// Concatenate comments.
+					if (s.search(regexp.comment) != -1) {
+						if ("#" in rec)
+							rec["#"] += s + "\n";
+						else
+							rec["#"]  = s + "\n";
+						continue;
+					}
+
+					m = s.match(regexp.record);
+					if (m) {
+						// Record found.
+						if (m[1] != "")
+							id = unescapePO(new String(m[1]));
+						if (id in rec)
+							rec[id] += unescapePO(new String(m[2]));
+						else
+							rec[id]  = unescapePO(new String(m[2]));
+						continue;
+					}
+				}
+
+				return "msgid" in rec ? rec : null;
+			}
+
+			// Read header record.
+			var rec = getNext();
+			if (rec == null)
+				return;
+			if (rec.msgid == "") {
+				// Parse charset.
+				m = rec.msgstr.match(new RegExp("^\\s*Content-Type\\s*:\\s*([-\\w]+/[-\\w]+)\\s*(;\\s*charset\\s*=\\s*([-\\w]+))?$", "im"));
+				if (m && m.length >= 4) {
+					this.charset = m[3];
+
+					// Rewind and reconfigure code page.
+					dat.Position = 0;
+					dat.Charset = this.charset;
+
+					// Re-read header.
+					rec = getNext();
+				}
+			}
+
+			// Load header and all the records.
+			this.push(rec.msgid, rec.msgstr, rec.fuzzy, "#" in rec ? rec["#"] : null);
+			while ((rec = getNext()) != null)
+				this.push(rec.msgid, rec.msgstr, rec.fuzzy, "#" in rec ? rec["#"] : null);
+		} finally {
+			dat.Close();
+		}
+	}
+}
+
+
+POCatalog.prototype.push = function(key, trans, fuzzy, comment)
+{
+	var rec = {
+		"msgstr" : trans,
+		"fuzzy"  : fuzzy ? true : false
+	};
+	if (comment)
+		rec["#"] = comment;
+
+	this.data[key] = rec;
+}
+
+
+POCatalog.prototype.translate = function(key)
+{
+	if (!(key in this.data)) {
+		// No translation found.
+		return key;
+	}
+
+	var rec = this.data[key];
+	if (rec.msgstr == "" || rec.fuzzy) {
+		// Translation is blank (untranslated) or fuzzy.
+		return key;
+	}
+
+	return rec.msgstr;
+}
+
+
+POCatalog.prototype.save = function(path)
+{
+	// Open PO file in memory.
+	var dat = new ActiveXObject("ADODB.Stream");
+	dat.Open();
+	try {
+		// PO is text file, uses Unix line breaks and given encoding.
+		dat.Type = adTypeText;
+		dat.LineSeparator = adLF;
+		dat.Charset = this.charset;
+
+		var writeRec = function(key, rec) {
+			if (rec.fuzzy)
+				dat.WriteText("#, fuzzy", adWriteLine);
+
+			if ("#" in rec)
+				dat.WriteText(rec["#"], adWriteLine);
+
+			dat.WriteText("msgid \""  + escapePO(key       ) + "\"", adWriteLine);
+			dat.WriteText("msgstr \"" + escapePO(rec.msgstr) + "\"", adWriteLine);
+			dat.WriteText("", adWriteLine);
+		}
+
+		// Write header first.
+		if ("" in this.data)
+			writeRec("", this.data[""]);
+
+		// Write records, skip header.
+		for (var key in this.data) {
+			if (key == "") continue;
+			writeRec(key, this.data[key]);
+		}
+
+		if (this.charset.toLowerCase() == "utf-8") {
+			// Write to file without UTF-8 BOM.
+			var dat_nobom = new ActiveXObject("ADODB.Stream");
+			dat_nobom.Type = adTypeBinary;
+			dat_nobom.Mode = adModeReadWrite;
+			dat_nobom.Open();
+			try {
+				// Skip BOM (first three bytes) and copy the rest.
+				dat.Position = 3;
+				dat.CopyTo(dat_nobom);
+
+				dat_nobom.SaveToFile(path, adSaveCreateOverWrite);
+			} finally {
+				dat_nobom.Close();
+			}
+		} else {
+			dat.SaveToFile(path, adSaveCreateOverWrite);
+		}
+	} finally {
+		dat.Close();
+	}
+}
+/*@end @*/
+
+// SIG // Begin signature block
+// SIG // MIIXmAYJKoZIhvcNAQcCoIIXiTCCF4UCAQExCzAJBgUr
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+// SIG // w77U0LZw8wIDAQABo4IBYjCCAV4wCQYDVR0TBAIwADAO
+// SIG // BgNVHQ8BAf8EBAMCB4AwKwYDVR0fBCQwIjAgoB6gHIYa
+// SIG // aHR0cDovL3N2LnN5bWNiLmNvbS9zdi5jcmwwZgYDVR0g
+// SIG // BF8wXTBbBgtghkgBhvhFAQcXAzBMMCMGCCsGAQUFBwIB
+// SIG // FhdodHRwczovL2Quc3ltY2IuY29tL2NwczAlBggrBgEF
+// SIG // BQcCAjAZDBdodHRwczovL2Quc3ltY2IuY29tL3JwYTAT
+// SIG // BgNVHSUEDDAKBggrBgEFBQcDAzBXBggrBgEFBQcBAQRL
+// SIG // MEkwHwYIKwYBBQUHMAGGE2h0dHA6Ly9zdi5zeW1jZC5j
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+// SIG // XRVdkT6CrEYcHyOLaHfe36jVHw8vLIiR2cyEcB3vweyr
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+// SIG // HI8+0d1vLzRtK77hFeV7CIMIfnpoYThJKTSLxdr0kn+j
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+// SIG // gcoxCzAJBgNVBAYTAlVTMRcwFQYDVQQKEw5WZXJpU2ln
+// SIG // biwgSW5jLjEfMB0GA1UECxMWVmVyaVNpZ24gVHJ1c3Qg
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+// SIG // G1H3ow0Yd2i72DarLyFQ2p7z518nTgvCl8gJcJOp2lwN
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+// SIG // MAGGE2h0dHA6Ly9zMi5zeW1jYi5jb20wEgYDVR0TAQH/
+// SIG // BAgwBgEB/wIBADBsBgNVHSAEZTBjMGEGC2CGSAGG+EUB
+// SIG // BxcDMFIwJgYIKwYBBQUHAgEWGmh0dHA6Ly93d3cuc3lt
+// SIG // YXV0aC5jb20vY3BzMCgGCCsGAQUFBwICMBwaGmh0dHA6
+// SIG // Ly93d3cuc3ltYXV0aC5jb20vcnBhMDAGA1UdHwQpMCcw
+// SIG // JaAjoCGGH2h0dHA6Ly9zMS5zeW1jYi5jb20vcGNhMy1n
+// SIG // NS5jcmwwHQYDVR0lBBYwFAYIKwYBBQUHAwIGCCsGAQUF
+// SIG // BwMDMA4GA1UdDwEB/wQEAwIBBjApBgNVHREEIjAgpB4w
+// SIG // HDEaMBgGA1UEAxMRU3ltYW50ZWNQS0ktMS01NjcwHQYD
+// SIG // VR0OBBYEFJY7U/B5M5evfYPvLivMyreGHnJmMB8GA1Ud
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+// SIG // XgymdR54FyPd/ewaA1U5+3GVx2Vap44w0kRaYdtwb9oh
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+// SIG // tMkBTCd7C6wZBSKgYBU/2sn7TUyP+3Jnd/0nlMe6NQ6I
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+// SIG // r2Ty0BQhMYIEPDCCBDgCAQEwgZMwfzELMAkGA1UEBhMC
+// SIG // VVMxHTAbBgNVBAoTFFN5bWFudGVjIENvcnBvcmF0aW9u
+// SIG // MR8wHQYDVQQLExZTeW1hbnRlYyBUcnVzdCBOZXR3b3Jr
+// SIG // MTAwLgYDVQQDEydTeW1hbnRlYyBDbGFzcyAzIFNIQTI1
+// SIG // NiBDb2RlIFNpZ25pbmcgQ0ECEDB6NnqqPmiBpvlPCMs7
+// SIG // OWQwCQYFKw4DAhoFAKBwMBAGCisGAQQBgjcCAQwxAjAA
+// SIG // MBkGCSqGSIb3DQEJAzEMBgorBgEEAYI3AgEEMBwGCisG
+// SIG // AQQBgjcCAQsxDjAMBgorBgEEAYI3AgEVMCMGCSqGSIb3
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+// SIG // hkiG9w0BAQEFAASCAQAAwzjZxcGwor+hr9BV4ToMMRKE
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+// SIG // hvcNAQkFMQ8XDTE2MDkxNjEyMzczNFowIwYJKoZIhvcN
+// SIG // AQkEMRYEFKRwj4RX4soe1EoFkdcak0yL5smOMA0GCSqG
+// SIG // SIb3DQEBAQUABIIBAB4JKKplFtYkF6cigGfevY4aPAIA
+// SIG // S1ygZPaknt16zruQbKcqSxs/tGYzgw/Af0s6mpZGv6Gn
+// SIG // FiyK8aQ+ZxHmNnxQzjEtggHRAuf7uRNwK63RNIDgz35I
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+// SIG // MzUVyA3wqtxc/N0eq6y5BOkB+WMkrz3Si896uHrwkm2f
+// SIG // 03qUwPDoJLCdVIrGfzf+ktIEPsCHYPDHk6s/tCI+o4gQ
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+// SIG // K/57qEOBFIjRkzE8WZS/D4OmrUTR552WiiLUb16NOWgy
+// SIG // J+F5oIk=
+// SIG // End signature block
diff --git a/String.js b/String.js
index 89948a1..67cb4c9 100644
--- a/String.js
+++ b/String.js
@@ -42,59 +42,6 @@ function _S(str)
 }
 
 
-var _unC_stat = null;
-function _unC(str)
-{
-	if (!_unC_stat) {
-		_unC_stat = {
-			"re_bslash": new RegExp("\\\\\\\\", "g"),
-			"re_bs":     new RegExp("\\\\b",    "g"),
-			"re_ff":     new RegExp("\\\\f",    "g"),
-			"re_lf":     new RegExp("\\\\n",    "g"),
-			"re_cr":     new RegExp("\\\\r",    "g"),
-			"re_tab":    new RegExp("\\\\t",    "g"),
-			"re_apost":  new RegExp("\\\\\\\'", "g"),
-			"re_quot":   new RegExp("\\\\\\\"", "g")
-		};
-	}
-
-	if (str == null) return null;
-	switch (typeof(str)) {
-		case "string":    break;
-		case "undefined": return null;
-		default:          try { str = str.toString(); } catch (err) { return null; }
-	}
-
-	return str.replace(_unC_stat.re_bslash, "\\").replace(_unC_stat.re_bs, "\b").replace(_unC_stat.re_ff, "\f").replace(_unC_stat.re_lf, "\n").replace(_unC_stat.re_cr, "\r").replace(_unC_stat.re_tab, "\t").replace(_unC_stat.re_apost, "\'").replace(_unC_stat.re_quot, "\"");
-}
-
-
-var _PO_stat = null;
-function _PO(str)
-{
-	if (!_PO_stat) {
-		_PO_stat = {
-			"re_bslash": new RegExp("\\\\", "g"),
-			"re_bs":     new RegExp("\b",   "g"),
-			"re_ff":     new RegExp("\f",   "g"),
-			"re_lf":     new RegExp("\n",   "g"),
-			"re_cr":     new RegExp("\r",   "g"),
-			"re_tab":    new RegExp("\t",   "g"),
-			"re_quot":   new RegExp("\"",   "g")
-		};
-	}
-
-	if (str == null) return null;
-	switch (typeof(str)) {
-		case "string":    break;
-		case "undefined": return null;
-		default:          try { str = str.toString(); } catch (err) { return null; }
-	}
-
-	return str.replace(_PO_stat.re_bslash, "\\\\").replace(_PO_stat.re_bs, "\\b").replace(_PO_stat.re_ff, "\\f").replace(_PO_stat.re_lf, "\\n").replace(_PO_stat.re_cr, "\\r").replace(_PO_stat.re_tab, "\\t").replace(_PO_stat.re_quot, "\\\"");
-}
-
-
 var LF2CRLF_stat = null;
 function LF2CRLF(str)
 {
@@ -171,14 +118,36 @@ function Time2Str(date)
 	return str;
 }
 
+
+function CodePageToId(codepage)
+{
+	switch (codepage) {
+		case 932 : return "shift-jis";
+		case 936 : return "gb2312";
+		case 949 : return "euc-kr";
+		case 950 : return "big5";
+		case 874 :
+		case 1250:
+		case 1251:
+		case 1252:
+		case 1253:
+		case 1254:
+		case 1255:
+		case 1256:
+		case 1257:
+		case 1258: return "windows-" + codepage;
+		default  : throw new Error("Unsupported code page.");
+	}
+}
+
 /*@end @*/
 
 // SIG // Begin signature block
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 // SIG // DgMCGgUAMGcGCisGAQQBgjcCAQSgWTBXMDIGCisGAQQB
 // SIG // gjcCAR4wJAIBAQQQEODJBs441BGiowAQS9NQkAIBAAIB
-// SIG // AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFOcRfNpt3sEy
-// SIG // ab6nmkkq0PgWnXbBoIISyDCCA+4wggNXoAMCAQICEH6T
+// SIG // AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFI98xdWTelNz
+// SIG // qT5D7pR+82v8ABwLoIISyDCCA+4wggNXoAMCAQICEH6T
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 // SIG // cGUxFDASBgNVBAcTC0R1cmJhbnZpbGxlMQ8wDQYDVQQK
@@ -332,30 +301,30 @@ function Time2Str(date)
 // SIG // OWQwCQYFKw4DAhoFAKBwMBAGCisGAQQBgjcCAQwxAjAA
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-// SIG // dwvV22k=
+// SIG // hvcNAQkFMQ8XDTE2MDkxNjEyMzczN1owIwYJKoZIhvcN
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+// SIG // BV0s2NCD0QY3wthzfQibnecVp0NHsIjAzRG4Ueo8DIL8
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+// SIG // r9EcazspX5hUDfo/IzJcpuQJLJtBtkXaaBPt/Gzb85MX
+// SIG // DfpSu9FxqB+8nMWItQsGxNP5n68nECEfvSGOxjEMmeTh
+// SIG // 0raRTkI=
 // SIG // End signature block