---
title: "System Settings Quick Reference · RUAL Documentation"
description: "System settings in one table, with defaults."
canonical: https://docs.rual.nl/reference/system-settings-quickref
language: en
---

# System Settings Quick Reference

All predefined keys on one screen, key, purpose, example. The full guide with secure values and setup walkthroughs is in System Settings Reference.

Change any key in RUAL Studio under **System settings**; changes apply immediately. Full explanations, secure-value handling, and setup examples: [System Settings Reference](https://docs.rual.nl/blueprints/system-settings-reference).

### Locale & Formats

| Key | Purpose | Example |
| --- | --- | --- |
| `timezone` | Timezone for `date` blocks | `Europe/Amsterdam` |
| `thousand_separator` | Thousands separator | `.` or `,` |
| `decimal_separator` | Decimal separator | `,` or `.` |
| `default_divide_by` | Divisor for pricing inputs | `100` (cents) |

### Language

| Key | Purpose | Example |
| --- | --- | --- |
| `language_default` | Fallback language | `nl`, `en` |
| `language_user_enabled` | Language from user profile | `true` |
| `language_query_enabled` | Language from query string | `true` |
| `language_browser_enabled` | Language from browser | `true` |

### Dates & Input

| Key | Purpose | Example |
| --- | --- | --- |
| `input_date_format` | Format for date inputs | `YYYY-MM-DD` |
| `input_datetime_format` | Format for datetime inputs | `YYYY-MM-DD HH:mm:ss` |
| `date_default_format` | Default date rendering | `YYYY-MM-DD HH:mm:ss` |

### Email & Messaging

| Key | Purpose | Example | Secure? |
| --- | --- | --- | --- |
| `email_default_from` | Default from-address | `noreply@yourdomain.com` | No |
| `postmark_token` | Postmark server token | `xxxxxxxx-…` | **Yes, always** |
| `messagebird_originator` | Originator for 2FA SMS | `YourApp` | No |

### Custom Keys

Your own keys (integration tokens, hosts, flags) live here too: named by integration (`stripe_secret_key`, `slack_webhook_url`), secrets marked secure at creation. Read any key in a flow with the `get system setting` block.

### Next Steps