You can read the file by using a get or get next statement. Also, you can write to the file by invoking an add or replace statement; you can remove a record from the file with a delete statement.
At generation time, use a ResourceAssociation part to specify how you want a relative record to be implemented for your target platform and provide information about how the fileName property relates to a physical file. For more information, see the EGL Generation Guide.
For information about properties you can assign to a RelativeRecord definition, see RelativeRecord properties.