General 
- Item name
- _diffrn_radiation.pdbx_wavelength
- Category name
- diffrn_radiation
- Attribute name
- pdbx_wavelength
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.005 % of entries
Item Description 
Data Type 
- Data type code
- line
- Data type detail
- char item types / multi-word items ...
- Primitive data type code
- char
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*