各位虫友，有没有投稿Experimental and Clinical Endocrinology & Diabetes后校稿的？我收到的校稿邮件有一句话不太明白，求解答：
• Permission to Publish and Copyright Transfer Agreement (CTA). Please read it carefully, sign page 2 using a digital signature and return it to us by clicking the red envelope.
• Conflict of Interest Declaration (COI). Please read it carefully, sign it using a digital signature and return it to us by clicking on the red envelope.
请问这其中的“return it to us by clicking the red envelope”或者“return it to us by clicking on the red envelope”中的clicking on the red envelope是什么操作？
在线等，谢谢。 返回小木虫查看更多