ASCII export produces an output file containing only plain ASCII characters. This is the simplest and most direct text output. It does not contain any Org markup. UTF-8 export uses additional characters and symbols available in this encoding standards.
Export as an ASCII file with a ‘.txt’ extension. For ‘myfile.org’, Org exports to ‘myfile.txt’, overwriting without warning. For ‘myfile.txt’, Org exports to ‘myfile.txt.txt’ in order to prevent data loss.