# Systems Reference Automatically generated reference documentation for all **mp-units** systems. ## Indexes - [Dimensions](dimensions_index.md) - All base dimensions - [Quantities](quantities_index.md) - All quantities - [Units](units_index.md) - All units - [Prefixes](prefixes_index.md) - All prefixes - [Point Origins](point_origins_index.md) - All point origins ## Systems | System | Dimensions | Quantities | Units | Prefixes | Point Origins | |--------|:----------:|:----------:|:-----:|:--------:|:-------------:| | [Angular](systems/angular.md) | 1 | 2 | 5 | — | — | | [Astronomy](systems/astronomy.md) | — | — | 10 | — | — | | [CGS](systems/cgs.md) | — | — | 8 | — | — | | [Core](systems/core.md) | 1 | 1 | 7 | — | — | | [HEP](systems/hep.md) | — | — | 9 | — | — | | [IAU](systems/iau.md) | — | — | 16 | — | — | | [IEC](systems/iec.md) | — | 31 | 6 | 8 | — | | [Imperial](systems/imperial.md) | — | — | 22 | — | — | | [ISQ](systems/isq.md) | 8 | 352 | — | — | — | | [ISQ Angle](systems/isq_angle.md) | — | 20 | — | — | — | | [Natural](systems/natural.md) | 1 | 13 | 3 | — | — | | [SI](systems/si.md) | — | — | 52 | 24 | 5 | | [Typographic](systems/typographic.md) | — | — | 9 | — | — | | [USC](systems/usc.md) | — | — | 45 | — | 2 | | [Yard Pound](systems/yard_pound.md) | — | — | 21 | — | — |