first commit

hrmsEjb/jxl/read/biff/MarginRecord.java

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+package jxl.read.biff;
+
+import jxl.biff.DoubleHelper;
+import jxl.biff.RecordData;
+import jxl.biff.Type;
+
+abstract class MarginRecord extends RecordData {
+  private double margin;
+  
+  protected MarginRecord(Type t, Record r) {
+    super(t);
+    byte[] data = r.getData();
+    this.margin = DoubleHelper.getIEEEDouble(data, 0);
+  }
+  
+  double getMargin() {
+    return this.margin;
+  }
+}