Here are the data structures with brief descriptions:
  columns_s | |
| optionStackEntry | |
| pbm_set | |
| poptAlias | A popt alias argument for poptAddAlias() |
| poptContext_s | |
| poptDone_s | Keep track of option tables already processed |
| poptItem_s | A popt alias or exec argument for poptAddItem() |
 poptOption |
