6.3 filename

Okay kiddo, have you ever seen a computer file like a picture or a document? Well, when we save those things on our computer, they have a name so we can find them later. That name is called a filename.

Now, some computer systems have rules about what can and cannot be in a filename. One of those rules is about how long the filename can be.

A 6.3 filename means that the filename can only be six characters long and it can have up to three characters after a dot.

Think of it like a secret code where you can only use six letters or numbers to name your file and then you can use three more letters after a dot to describe what the file is.

So, if you wanted to name a picture of your favorite toy "teddybear", you would have to make sure it was only six letters long, so you might have to call it "teddyb" and then add ".jpg" after it to show that it's a picture.

That's what a 6.3 filename is, a special rule for naming files on some computer systems.