Given the provided legal context, your task is to identify and extract a specific clause or relevant complete sentence that is directly related to the given instruction.
Ensure that the extracted text preserves the original form and legal significance of the context.
Your response should be the exact clause or sentence as it appears in the original context, without any modifications.
Context: Both parties agree that all Proprietary Material which relates to the above-stated Subject(s) and Purpose(s) and which is disclosed to the receiving party by the disclosing party, whether orally, or in written or other tangible form, will be maintained by the receiving party in confidence, provided, that: (a) disclosures in writing are expressly marked with a confidential or proprietary legend; (b) oral disclosures and tangible embodiments in a form other than written are identified as confidential or proprietary at the time of disclosure or delivery; and (c) oral disclosures are thereafter reduced to writing and marked with a confidential or proprietary legend, which writing is thereafter furnished to the receiving party within 7 days after the oral disclosure. The receiving party may, however, in furtherance of the aforesaid Purpose(s), disclose such Proprietary Material to its professional advisors, investment committee participants, and those of its employees and others under its control, all of whom will be advised of this Agreement and agree to accept the obligations there under. The receiving party further agrees not to reverse engineer any tangible embodiments of Proprietary Material furnished by the disclosing party, not to disclose any Proprietary Material to third parties and limit circulation of the Proprietary Material to such employees and others under its control having a direct "need to know" in connection with the above mentioned Purpose.
Instruction: Extract the prohibitions placed on the receiving party in terms of handling the Proprietary Material.