> ## 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. # Glossary and key concepts > Learn the core terms and structures you use when working in cfo.ai. These concepts describe how cfo.ai organizes your source data, financial logic, and reporting views. ## Terms The main container for a financial plan. A Model holds its Pages, Variables, Dimensions, Scenarios, and connected data. A workspace within a Model that groups related Tables, Charts, and Text Blocks. The cfo.ai sidebar and workspace showing several Pages in a financial Model A spreadsheet-like Block for viewing, calculating, and organizing financial data. A cfo.ai Table Block showing monthly revenue, expenses, and margin Variables A modeled value that can be calculated or aggregated, such as revenue, headcount, cash, or gross margin. A profit and loss Table Block showing revenue, cost, profit, and margin Variables A field you use to group, filter, or segment a Variable, such as department, region, customer, or product. A version of Model data used to explore alternatives and compare possible outcomes. The Scenario picker comparing a main plan, best case, and budget A connection that brings data from another system into cfo.ai. The cfo.ai integration catalog showing accounting, spreadsheet, and file connections A structured collection of source records made up of rows and columns. Rows of source data used in a cfo.ai Database