> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cfo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Formula glossary

## Aggregation

The process of combining several values into one result, such as a sum or average.

## Date reference

A named point on the timeline. **Last close** commonly separates closed Actuals from open Forecast periods.

## Dimension

The primary role of a property used to group, filter, or segment values. Examples include Department, Region, and Product.

## Dimension item

One value within a dimension, such as Sales within Department or West within Region.

## Expression

The part of a formula that describes what to calculate.

## Formula

A saved calculation for a property. A formula has an expression and a scope.

## Formula break

Another name for a Formula period boundary. User-facing documentation generally uses **Formula period**.

## Formula period

A part of the timeline that can use its own formula, such as Actuals or Forecast.

## Metric

The primary role of a property used as a calculated or aggregated value. Examples include Revenue, Headcount, and Gross Margin.

## Property

A named piece of information the model knows about, such as Revenue, Department, Headcount, or Date. Metric and dimension describe the property's primary role.

## Scenario

A version of the model, such as Base or Plan. Formulas are saved within a scenario.

## Scope

The part of the model where a formula applies. Scope can include segmentations, segment values, Date, and Formula periods.

## Segment

A specific dimension value or combination of values, such as Department = Sales.

## Segmentation

The dimension or dimensions used to break down a value, such as Revenue by Department.