68694
Overt surface level security features include using ultra violet , threads , watermarks , holograms , security designs , micro text , fibres and other discernible features into the paper substance or on its surface during the paper making process .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None