| ... | ... | @@ -287,4 +287,8 @@ | 
              
                    | 287 | 287 | **Level**: advanced(%%)  **Type**: user documentation | 
              
                    | 288 | 288 |  | 
              
                    | 289 | 289 | This collection of tutorials shows how to use NEURON's optimization tools. Before working through these tutorials, most readers should probably examine the on-line "Introduction to Optimization" http://neos-guide.org/content/optimization-introduction. | 
              
                    |  | 290 | +=== [[Ball and Stick model part 1>>https://neuron.yale.edu/neuron/docs/ball-and-stick-model-part-1||rel=" noopener noreferrer" target="_blank"]] === | 
              
                    | 290 | 290 |  | 
              
                    |  | 292 | +**Level**: advanced(%%)  **Type**: user documentation | 
              
                    |  | 293 | + | 
              
                    |  | 294 | + |