> pww("matt", 3, nrow = 7, ncol = 9)
/ - - - - - - - - - \ 
| X X X       X X X | 
|       X X X       | 
|       X X X       | 
|       X X X       | 
| X X X       X X X | 
| X X X       X X X | 
| X X X       X X X | 
\ - - - - - - - - - /