9 Sep
                
                    2022
                
            
            
                9 Sep
                
                '22
                
            
            
            
        
    
                4:48 p.m.
            
        Dear Colleagues, I imagine you will find the article “The 4Rs and crystal structure analysis: reliability, reproducibility, replicability and reusability” of interest. The weblink is https://journals.iucr.org/j/issues/2022/05/00/dv5002/index.html The article is open access. It is a Teaching and Education article in J Appl Cryst. Best wishes, John Emeritus Professor John R Helliwell DSc