Added wpb22 format & document styles & wpb20 document styles to improve Background document support

Added LimitWidToPageWid so that text does not go past pagewidth into right margin
Various background format improvements, i.e. headers, tabs, continue messages, and text xoffsets/widths

PROMS/fmtxml/AppendPlantSpecific.cs

@@ -226,6 +226,9 @@ namespace fmtxml
 				case "WPB.X20":
 					AddWPB20fmt(ref fmtdata);
 					break;
+				case "WPB.X22":
+					AddWPB22fmt(ref fmtdata);
+					break;
 				case "WEPENB.FMT":
 					AddWEPENBFmt(ref fmtdata);
 					break;
@@ -1318,6 +1321,12 @@ namespace fmtxml
 				case "WEP2.DOC":
 					AddWEP2DOC(ref dcstyles);
 					break;
+				case "WPB.Y20":
+					AddWPB20DOC(ref dcstyles);
+					break;
+				case "WPB.Y22":
+					AddWPB20DOC(ref dcstyles);	// subformat 22 change is same as 20
+					break;
 				case "WEPENB.DOC":
 					AddWEPENBDOC(ref dcstyles);
 					break;