# Demo

You entered the OD groupoid family symbol: cm1(1) { c_2 - (-)} [r,-]

The OD groupoid family parsed fine.

## General OD Family Symbol

*c* | *m* | 1 | | (1) | | |

⎰ | *c*_{2} | - | ⎛ | - | ⎞ | ⎱ |

⎱ | *n*_{1,2} | | ⎝ | | ⎠ | ⎰ |

| [*r*'] | | | | |

## Reduced general OD Family Symbol

*c* | *m* | 1 | | (1) | | |

⎰ | *c*_{2} | - | ⎛ | - | ⎞ | ⎱ |

⎱ | *n*_{1,2} | | ⎝ | | ⎠ | ⎰ |

| [*r*'] | | | | |

## General Data

### OD family of layers

Kinds of layers: | *N*=1 |

Category: | II (single) |

Pointgroup: | *m*11 (*C*_{s}) |

Crystal system: | monoclinic |

Layer system: | rectangular |

Common lattice: | same |

Common lattice size (rel. to global): | 1 |

Layer planes: | (001) |

**c**_{0} | (0,*s*/2,1) |

Global lattice restriction: | **ab**=0 |

User supplied lattice restriction: | none |

Lattice restriction derived from layers: | **ab**=0 |

## Layer Data

### Layer 0:

Type: | Layer group |

Symbol: | *cm*1(1) |

Crystal system: | monoclinic |

Layer system: | rectangular |

Polarity: | polar |

Lattice restriction (instrinsic): | **ab**=0 |

Lattice restriction (extrinsic): | **ab**=0 |

Lattice (rel. to global): | same |

Lattice (rel. to common): | same |

Lattice size (rel. to global): | 1 |

Lattice size (rel. to common): | 1 |

Order (modulo lattice): | 4 |

Order (modulo global lattice): | 4 |

Order (modulo common lattice): | 4 |

Floating origin: | 0,y,z |

#### Symmetry operations:

*x*,*y*,*z* | 1 |

-*x*,*y*,*z* | *m* |

*x*+1/2,*y*+1/2,*z* | *t*_{C} |

-*x*+1/2,*y*+1/2,*z* | *b* |

#### Special positions:

x,y,z

0,y,z

#### Centring vectors:

(1/2,1/2,0)

## Special parameters