I hope someone could help.
I am using this method in C#.

Microsoft.VisualBasic.FileSystem.FilePut(file_num, "aaa",-1)

Id like to know what '-1' can mean.
MSDN writes it is "record number (Random mode files) or byte number (Binary mode files) at which writing starts".
But it does not make sense (at least for me) as there is no -1 record.
However, the code snippet works fine.