diff --git a/structcompatibility.go b/structcompatibility.go
new file mode 100644
index 0000000..932fbfe
--- /dev/null
+++ b/structcompatibility.go
@@ -0,0 +1,103 @@
+//go:build ignore
+
+package docx
+
+import (
+	"encoding/xml"
+	"io"
+	"strings"
+)
+
+// AlternateContent ...
+type AlternateContent struct {
+	XMLName xml.Name `xml:"mc:AlternateContent,omitempty"`
+
+	Choice   *MCChoice
+	Fallback struct{} `xml:"mc:Fallback"`
+
+	file *Docx
+}
+
+// UnmarshalXML ...
+func (a *AlternateContent) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	for {
+		t, err := d.Token()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		if tt, ok := t.(xml.StartElement); ok {
+			switch tt.Name.Local {
+			case "Choice":
+				var value MCChoice
+				value.file = a.file
+				err = d.DecodeElement(&value, &tt)
+				if err != nil && !strings.HasPrefix(err.Error(), "expected") {
+					return err
+				}
+				a.Choice = &value
+			default:
+				err = d.Skip() // skip unsupported tags
+				if err != nil {
+					return err
+				}
+				continue
+			}
+		}
+	}
+	return nil
+}
+
+// MCChoice ...
+type MCChoice struct {
+	XMLName  xml.Name `xml:"mc:Choice,omitempty"`
+	Requires string   `xml:",attr,omitempty"`
+
+	Elems []interface{}
+
+	file *Docx
+}
+
+// UnmarshalXML ...
+func (c *MCChoice) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	for _, attr := range start.Attr {
+		switch attr.Name.Local {
+		case "Requires":
+			c.Requires = attr.Value
+		default:
+			// ignore other attributes
+		}
+	}
+	for {
+		t, err := d.Token()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		if tt, ok := t.(xml.StartElement); ok {
+			switch tt.Name.Local {
+			case "drawing":
+				var value Drawing
+				value.file = c.file
+				err = d.DecodeElement(&value, &tt)
+				if err != nil && !strings.HasPrefix(err.Error(), "expected") {
+					return err
+				}
+				c.Elems = append(c.Elems, &value)
+			default:
+				err = d.Skip() // skip unsupported tags
+				if err != nil {
+					return err
+				}
+				continue
+			}
+		}
+	}
+	return nil
+}
diff --git a/structtable.go b/structtable.go
index e364686..3ae1b71 100644
--- a/structtable.go
+++ b/structtable.go
@@ -776,9 +776,9 @@ func (w *WTableBorders) UnmarshalXML(d *xml.Decoder, start xml.StartElement) err
 // WTableBorder is a structure representing a single border of a Word table.
 type WTableBorder struct {
 	Val   string `xml:"w:val,attr"`
-	Size  int    `xml:"w:sz,attr"`
-	Space int    `xml:"w:space,attr"`
-	Color string `xml:"w:color,attr"`
+	Size  int    `xml:"w:sz,attr,omitempty"`
+	Space int    `xml:"w:space,attr,omitempty"`
+	Color string `xml:"w:color,attr,omitempty"`
 }
 
 // UnmarshalXML ...
@@ -788,12 +788,18 @@ func (t *WTableBorder) UnmarshalXML(d *xml.Decoder, start xml.StartElement) erro
 		case "val":
 			t.Val = attr.Value
 		case "sz":
+			if attr.Value == "" {
+				continue
+			}
 			sz, err := strconv.Atoi(attr.Value)
 			if err != nil {
 				return err
 			}
 			t.Size = sz
 		case "space":
+			if attr.Value == "" {
+				continue
+			}
 			space, err := strconv.Atoi(attr.Value)
 			if err != nil {
 				return err