Data Item _category.mandatory_code
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General 
- Item name
- _category.mandatory_code
- Category name
- category
- Attribute name
- mandatory_code
- Required in PDB entries
- yes
- Used in currrent PDB entries
- No
Item Description
Whether the category must be specified in a dictionary.
Data Type 
- Data type code
- code
- Data type detail
- A single word
- Primitive data type code
- char
- Regular expression
- [^\t\n "]*