When we save a file on our computer, we give it a name so we can easily find it later. This name is called the filename. Sometimes, we want to give our files very long names, but our computer only allows us to use a limited number of characters in a filename. This is where long filename support comes in.
Long filename support is a feature that allows us to use longer names for our files on our computer. It means that we can use more than the usual limit of 8 characters for the main part of the filename and 3 characters for the extension. For example, instead of having to name our file "nameofmyfile.txt", we can name it "this-is-the-name-of-my-file.txt" which is a much longer and descriptive name.
This feature was introduced because a lot of people found it difficult to keep track of all their files when filenames were so short and cryptic. It's like having a big toy box with only tiny labels on them: it's hard to tell which toy is inside each box. With long filename support, it's like having a toy box where you can clearly see what's inside each box, just by reading the label.
In short, long filename support is a tool that helps us organize our files more easily by letting us use longer and more descriptive names that are easier to recognize.