'宣言 Public Shared ReadOnly Property PrevBottom As LengthRef
'使用法 Dim value As LengthRef value = LengthRef.Predefined.PrevBottom
public static LengthRef PrevBottom {get;}
'宣言 Public Shared ReadOnly Property PrevBottom As LengthRef
'使用法 Dim value As LengthRef value = LengthRef.Predefined.PrevBottom
public static LengthRef PrevBottom {get;}