Doubt regarding a mail

I got this mail from coding blocks… what does this mean ?? c++ fundamentals is the name of the course
Hello Gunjan, the deadline for Section: Getting started with C++ of Course: C++ Fundamentals is due on today. Complete the section if you haven’t completed it yet.

@gunjan13082000 Each section of your course have some deadline to ensure that you complete the course on time. You should try to complete those sections on/before the deadline.
However your course validity will be upto the date as mentioned on your course dashboard.

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