>>>I have a large (4 MB) text file that contains lines like those below. Is there a way, maybe using StrToFile(), that I can send the different blocks to separate files? I want to include the header between the dashed lines as well as the detail before the next header.
>>>
>>>

>>>---------------------------------------------------------------------------------------------------
>>>00000015 Copy this block into a file called Import.txt and put into appropriate Export directory
>>>---------------------------------------------------------------------------------------------------
>>>1,HIPAA,HIPAA,20080102,EXP_00D7280001.TIF
>>>1,Office Notes,Office Notes,20080102,EXP_00D7260001.TIF
>>>1,Prescriptions,Prescriptions,20080102,EXP_00D7160001.TIF
>>>---------------------------------------------------------------------------------------------------
>>>00000016 Copy this block into a file called Import.txt and put into appropriate Export directory
>>>---------------------------------------------------------------------------------------------------
>>>1,HIPAA,HIPAA,20080102,EXP_00D7280001.TIF
>>>1,Office Notes,Office Notes,20080102,EXP_00D7260001.TIF
>>>

>>
>>String functions such as AT(), SUBSTR(), etc. would work, but may be slow. The best results you may achieve with Windows API functions here. I saw samples a while ago on Russian website, do you want me to look them up?
>
>This being VFP9, we don't care if aLines() returns more than 65000, so that's what I'd do. Get the whole thing into an array, then output lines one by one, inserting the headers as needed.

Still I would expect this be slow on a big (huge) files.