遗嘱文件上的内容及签名是该遗嘱文件真实和有效的标志。受生理和心理因素的影响,老年人遗嘱笔迹与模仿变化笔迹有相似之处。鉴定人员在检验中要注意从案情上、言语内容上以及笔迹细节特征上进行分析,综合利用文件上的其他物证,作出正确判断。 The content and signature of the will is a true and valid sign of the will. Affected by physical and psychological factors, the handwriting of the elderly is similar to imitation handwriting. Appraisers in the test should pay attention to the facts from the case, the content of the speech and handwriting details of the characteristics of the analysis, the comprehensive utilization of other physical evidence on the document to make the right judgments.