| adj.two | Zhong's 2-/3- stage Phase II design | 
| dec.sim | run dose-finding simulations | 
| dec.table | generate three-stage dose-finding decision table | 
| opt.design | Zhong's 2-/3- stage Phase II design | 
| plot.dec.sim | plot simulation results from a dec.sim object | 
| plot.dec.table | plot decision table from a "dec.table" object. | 
| print.dec.table | print decision table from a "dec.table" object. | 
| print.opt.design | print Zhong's design from a "opt.design" object. | 
| sl.sim | Dose-finding simulations for a list of scenarios | 
| summary.dec.sim | Summarizing simulation results from a dec.sim object |