| ATCdata | nodes of the ATC hierarchy |
| atctree | constructor for atctree objects |
| atctree-class | class to represent a tree from the ATC hierarchy |
| cutting | cutting from an ATC tree |
| cutting-method | cutting from an ATC tree |
| drugnames | display drug name for ATC codes |
| leaves | helper functions for atctrees |
| leaves-method | helper functions for atctrees |
| nlevs | helper functions for atctrees |
| nlevs-method | helper functions for atctrees |
| parents | show the parents of the specified node(s) |
| plot | plot the tree as a network graph |
| plot-method | plot the tree as a network graph |
| pruning | prune an ATC tree |
| pruning-method | prune an ATC tree |
| show-method | summarise atctree object |
| subset | find a subset of the tree |
| treelevs | helper functions for atctrees |
| treelevs-method | helper functions for atctrees |
| [-method | find a subset of the tree |