# Restricted system access

Restricted system access means that a user has been denied
access to TCL. Users can be denied access to TCL by placing the character `r` in the options attribute (Attribute 9: Attribute type)
of their item in the users file. When this restriction is active,
users are returned to the system logon program when they exit a process
by pressing the BREAK key, if it is enabled.

## See also

- [mds file](https://d3codex.com/systemfiles/mds-file/)
- [Security](https://d3codex.com/definitions/security/)
- [System privileges](https://d3codex.com/definitions/system-privileges/)
- [users file](https://d3codex.com/systemfiles/users-file/)

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Source: https://d3codex.com/definitions/restricted-system-access/ - part of the D3Codex reference.