# Included Tokens

Discovery comes with the following token definitions included:

Symbol name | Explanation | Examples | Default Cleaning Function |
---|---|---|---|

`"NUM"` |
Used for capturing number expressions. | "one", "thousand", "million" | `text2int` |

`"LETTER"` |
Use for picking out an individual letter. | "a", "b", "alpha", "bravo" | `alphaToA` |

`"NUM_ORD"` |
Used for ordinal numbers | "first", "second" | `text2int` |

`"NUM_PLURAL"` |
Plural numbers | "ones", "thousands" | `text2int` |

`"TIME_MONTH"` |
Calendar months | "January", "February" | none |

`"TIME_DAY"` |
Days of the week | "Monday", "Tuesday" | none |

`"TIME_WEEK"` |
Week words | "week", "weeks" | none |

# Included Cleaning Functions

Discovery comes with the following cleaning functions included:

Symbol name | Explanation | Default Spacing | Example Input | Example Output |
---|---|---|---|---|

`text2int` |
Convert text numbers to numerals | No Spaces | "one three five" | 135 |

`alphaToA` |
Convert International Radiotelephony expressions to the alphabet. | Single space | "alpha bravo zulu" | "a b z" |