I like that the links to files are completely controlled by `fileLocations.php` but this long concatenation has really low code readability.  At the top of done.php we should create something like `$statusEndPath = $up.$dataF.$_SESSION['DataSubFolder'].$extraDataF.$statusEndFileName.$outExt;` with a comment sayign it is figuring out the correct location for the status end file.  With this var set we get the much cleaner arrayToLine of `arrayToLine($data, $statusEndPath);`