# Automatic Billing > Kobana B2B2C platform for recurring billing, subscriptions, NF-e (Brazilian electronic invoices), payment gateways, dunning, and customer portal — full documentation in Portuguese, English, and Spanish. Documentation is published in three languages. Each language serves its own `llms.txt` (navigable index of every page) and `llms-full.txt` (every page concatenated as Markdown). Any HTML page is also available as raw Markdown by appending `.md` to the URL — for example: `/en/overview/introduction.md`. ## Docs - [Portuguese — index](https://docs.billing.kobana.com.br/pt/llms.txt): Primary documentation. Complete reference for Faturamento Automático. - [English — index](https://docs.billing.kobana.com.br/en/llms.txt): English translation of the Automatic Billing documentation. - [Spanish — index](https://docs.billing.kobana.com.br/es/llms.txt): Spanish translation of the Facturación Automática documentation. ## Optional - [Portuguese — full content](https://docs.billing.kobana.com.br/pt/llms-full.txt): Every page concatenated as Markdown for one-shot ingestion. - [English — full content](https://docs.billing.kobana.com.br/en/llms-full.txt): Every page concatenated as Markdown for one-shot ingestion. - [Spanish — full content](https://docs.billing.kobana.com.br/es/llms-full.txt): Every page concatenated as Markdown for one-shot ingestion.