| Beginner - Basic usage | PF | PFApplyVec | PFSet |
| PFApply | PFDestroy | PFType |
| Intermediate - Setting options for algorithms and data structures | PFGetType | PFSetFromOptions | PFSetType |
| Advanced - Setting more advanced options and customization | PFRegisterAll | PFRegisterDynamic |
| Developer - Interfaces intended primarily for library developers, not for typical applications programmers | PFCreate | PFView |
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