This excerpt taken from the TIBX 10-K filed Jan 25, 2008.
If Optionee is a permanent resident of South Africa, he or she may invest up to ZAR 2 million in foreign investments (including Company Shares). Investments exceeding this amount require approval by the South African Reserve Board. Optionee should consult his or her personal advisor regarding how this limitation is calculated. Compliance with the exchange controls is Optionees sole responsibility and neither the Company nor the Employer take any responsibility for Optionees compliance.