How can I write lines in the first line of a file?

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It seems I can only write lines in the end of a file , I checked the help file and don't know how to do it.

Thanks for any help!

[LxP 7]

You could read the file into memory, delete the file, write your lines and then append the original file to the end (untested):

Local $Prepend = 'This is my data to prepend.' & @CRLF
Local $FilePath = 'C:\File.txt'

Local $FileData = FileRead($FilePath, FileGetSize($FilePath))
FileDelete($FilePath)
FileWrite($FilePath, $Prepend & $FileData)

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So glad to tell LXP, it works! Thanks! I think this forum is very efficient.