| balance.miss.l()
 | Search for the optimal balanced item-level planned missing designs. | 
        
        | forward.opt.simsem()
 | Search for the optimal PM design using forward assembly. | 
        
        | opt1.simsem()
 | Search for the optimal missing pattern with only one missing measured variable. An internal function for forward assembly. | 
        
        | plotPM()
 | Plot the missing data patterns for the optimal PM design. | 
        
        | pres.design()
 | Check the simulation results for lower level designs in forward assembly. 
pres.designis only applicable when Mplus is used for simulations. | 
        
        | simPM()
 | Search for an optimal PM design. | 
        
        | summary(<simpm>)
 | Extract the summary information of the simpm object. | 
        
        | wave.miss.l()
 | Search for the optimal wave-level PM designs. |