| func. | function |
| XFCN | External Function |
| PF | Programmed Function |
| PCF | Pair Correlation Function |
| MTF | Modulation Transfer Function |
| MRF | Maintenance Reset Function |
| MFD | Multiple Function Detector |
| IFF | Iterative Function Fractal |
| HFT | High Function Terminal |
| HCF | Hybrid Distribution Function |
| GPF | Grand Partition Function |
| GLF | Gaussian Lobe Function |
| GFA | genetic function algorithm |
| FMH | Function Management Header |
| FFI | Foreign Function Interface |
| MTF | Modulation Transfer Function |
| OPDF | One-Particle Distribution Function |
| VAF | Velocity Autocorrelation Function |
| UDF | User Defined Function |
| SSF | Service Switching Function |
| SDF | Synthetic Discriminant Function |
| SCF | Service Control Function |
| RFC | Remote Function Call |
| RDF | Radial Dielectric Function |
| QFD | Quality Function Deployment |
| PEF | Potential Energy Function |
| PDF | Processor Defined Function |
| PDF | Pair Distribution Function |
| PCF | Point Coordination Function |
| ELF | Electron Localization Function |
| EDF | Effective Damage Function |
| CSF | Configuration State Function |
| DAF | Directory Access Function |
| DCF | Direct Correlation Function |
| CTF | Contrast Transfer Function |
| DCF | Distributed Coordination Function |
| DFG | Diode Function Generator |
| DFT | Diagnostic Function Test |
| DFT | Diagnostic Function Test |
| CTF | Contrast Transfer Function |
| DFT | Distributed Function Terminal |
| DGF | Distributed Gaussian Function |
| DRF | Dielectric Response Function |
| CCF | Cavity Correlation Function |
| ATF | Associated Theoretical Function [engl.] |
| RDF | Radial Distribution Function |
| CCF | Call Control Function [engl.] |
| CCF | Connection Control Function [engl.] |
| BLF | Bulk-Loss Function [engl.] |
| BIWF | Bearer Interworking Function [engl.] Anpassung der Nutzerinformationen an das Übertragungsverfahren im Netzwerk |