open        # open a file for read or write
(
ORDERFILE  # onto a FILEHANDLE called ORDERFILE
,
"
>          # > means write to the file, create if does not exist
           # Note all previous content will be deleted 
           # if this file exists >> means append to the end
$outfile   # full or relative path to file
"
)
or         # if the open works it returns true so we never do the next bit
diehtml()  # print an error message