Yes I use that method all of the time. My question was more to the fact of ...

Code:

Function OpenFile()
  Open (1,"c:\config.sys",5)
EndFunction

Function Write2File($Handle)
  Writeline(1, "This is a test")
EndFunction


Where a better way probably would be....
Code:

$FH = FreeFileHandle()

Function OpenFile($FH)
Open ($FH,"C:\Config.sys",5)
EndFunction

Function Write2File ($FH)
Writeline ($FH,"Nobody uses this file anymore")
EndFunction
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