Build a random data file by selecting the "Write to Data File" option. As the internal memory buffer fills up with random data, the data is automatically written to the file RANDOM.DAT. Data that is written to the RANDOM.DAT file is removed from the internal buffer, assuring that random data is not used twice.
The size of the RANDOM.DAT file is limited to about 100 K in the Evaluation Edition, and can be much larger in the Standard Edition. Once the RANDOM.DAT file is fully populated, random number generation will stop.
To use data from the RANDOM.DAT file, the easiest technique is to rename RANDOM.DAT to a different file name and then read the data using standard file i/o techniques. You should do error-checking on the rename operation to make sure that a simultaneous access problem did not cause the file operation to fail. When random number generation is restarted, Really Random Numbers will create a new RANDOM.DAT file which will be populated with freshly generated data.
The data in the RANDOM.DAT file is simply random binary data. There are no headers or other information in the file.