The Regional Flag and Regional Emblem Ordinance states what manner of use of the Hong Kong flag is prohibited and that desecration of the flag is prohibited; it also states that it is a punishable offence for a person to use the flag in a prohibited manner or desecrate the flag. According to the ordinance, a flag may not be used in advertisements or trademarks, and that "publicly and wilfully burning, mutilating, scrawling on, defiling or trampling" the flag is considered flag desecration. Similarly, the National Flag and National Emblem Ordinance extends the same prohibition toward the national PRC flag. The ordinances also allow for the Chief Executive to make stipulations regarding the use of the flag. In stipulations made in 1997, the Chief Executive further specified that the use of the flag in "any trade, calling or profession, or the logo, seal or badge of any non-governmental organisation" is also prohibited unless prior permission was obtained.