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# System functions

System functions return information about your Sigma organization, including details about users and system configurations.

| Function                                                   | Description                                                                                                                   |
| :--------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------- |
| [CurrentTimezone](/docs/currenttimezone)                   | Returns your organization's [IANA time zone](https://www.iana.org/time-zones) as configured in the **Administration** portal. |
| [CurrentUserAttributeText](/docs/currentuserattributetext) | Returns the value of a specific attribute for the current (signed-in) user.                                                   |
| [CurrentUserEmail](/docs/currentuseremail)                 | Returns the email address associated with the current (signed-in) user's account.                                             |
| [CurrentUserFirstName](/docs/currentuserfirstname)         | Returns the current (signed-in) user’s first name as configured in the user’s profile.                                        |
| [CurrentUserFullName](/docs/currentuserfullname)           | Returns the current (signed-in) user’s first and last name as configured in the user’s profile.                               |
| [CurrentUserInTeam](currentuserinteam)                     | Returns `true` if the current user is a member of a specific teams.                                                           |