# Utility Functions

This section documents various utility functions that may help
with application portability. These are not fundamental to NNG
or Scalability Protocols, but we find them useful for a variety
of other uses.

- [nng_clock](nng_clock.md)
- [nng_id_map](nng_id_map.md)
- [nng_msleep](nng_msleep.md)
- [nng_random](nng_random.md)