according to their agreement and details of the sharing of the expenses shall be explicitly indicated in the advertisement contract. (4) Deleted. <Jan. 25, 2010> (5) No one shall post any Internet advertisement for his or her election campaign except in the case of paragraph (1). (6) Methods of indicating grounds for advertisements and other necessary matters shall be determined by the National Election Commission Regulations. <Amended on Jan. 25, 2010> Article 83 (Provision of Transportation) (1) In a presidential election, the President of the Korea Railroad Corporation shall issue each candidate with 50 free nationwide passes to be used continuously for the election campaign during the election campaign period, as prescribed by the National Election Commission Regulations. <Amended on Jan. 17, 2012> (2) When a candidate to whom who free nationwide passes have been issued pursuant to paragraph (1) resigns, dies, has his or her registration nullified, he or she shall return them without delay to the President of the Korea Railroad Corporation. <Amended on Jan. 17, 2012> Article 84 (Independent Candidates Prohibited from Professing Political Party) No independent candidate shall profess that he or she is supported or recommended by a specific political party: Provided, That the same shall not apply to acts falling under any of the following subparagraphs: <Amended on Apr. 1, 1995; Feb. 16, 2000; Mar. 12, 2004; Jan. 25, 2010> 1. Indicating his or her career as a political party member; 2. Where a political party, which has not nominated a candidate in the relevant constituency, supports or aids any independent candidate, the act of professing such fact. Article 85 (Prohibition of Involvement of Public Officials in Election) (1) No public official or person who shall remain politically neutral in accordance with statutes or regulations may exercise undue influence on an election in connection with his or her duties or by taking advantage of his or her status, or shall commit an act that affects an election otherwise. <Newly Inserted on Feb. 13, 2014> (2) No public official shall engage in an election campaign, by taking advantage of his or her status. In such cases, where a public official engages in an election campaign targeting employees under his or her control, or executive officers and employees of an institution provided for in Article 53 (1) 4 through 6, or executive officers and employees of an institution subject to employment screening provided for in Article 17 of the Public Service Ethics Act, it shall be deemed that he or she engages in an election campaign, by taking advantage of his or her status. <Amended on Jan. 26, 2001; Aug. 4, 2005: Mar. 12, 2010; Jan. 17, 2012; Feb. 13, 2014; Dec. 30, 2014; Dec. 3, 2019>