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If Resources are enabled when you create a file with CreateIFile(), the information in the IFIL structures is stored as a resource record in the data file. Use OpenFileWithResource() and CloseRFile() to open and close the file(s) without referring to a specific IFIL structure in memory. You can assign the file numbers via a parameter, or ask c-tree to assign appropriate file numbers. To update the IFIL structure stored in the resource record, call GetIFile() to retrieve the structure and PutIFile() to rewrite it.
