'To retrieve the text from a file
    <file content> = My.Computer.FileSystem.ReadAllText(<Path&File>)

'To write text to a file
    My.Computer.FileSystem.WriteAllText(<Path&File>, <text>, False)

'To delete a file
    My.Computer.FileSystem.DeleteFile(<Path&File>)

'To test the exsiting of a file
    If My.Computer.FileSystem.FileExists(<Path&File>) = True Then
        <Actions>
    end if

'To retrieve users document directory and users temporary directory
    UsersDocumentDirectory = My.Computer.FileSystem.SpecialDirectories.MyDocuments
    UsersTemporaryDirectory = My.Computer.FileSystem.SpecialDirectories.Temp

'To split a string in substrings using the Split function
    Dim SubString() As String = Split(<string>, <SplitString>,,)

'Using mathcical functions by using the System.Math class
'   (example: Absolute value)
    System.Math.Abs(<value>) class

'calling a commandline command form the Gdal suit
'   (in this case "gdalinfo")
'   (blank characters inside the strings are essential!)
    Call Shell(BatFilePath & " gdalinfo.exe " & <SourcePath&File> & " > " & <TargetPath&file>, AppWinStyle.Hide, Wait:=True)