Let's delve into the concept of Fully Paid Rights Issue, my dear students. This term is used in the world of finance to describe a scenario where an investor pays the complete sum at the time of applying for a Rights Issue. In simpler terms, it means that the investor doesn't have any outstanding balance left to pay. This is a crucial aspect to understand, as it affects the overall cost and benefits of participating in a Rights Issue. So make sure you keep this in mind when making investment decisions.