<!--
  Copyright 2026 ESA

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->

# Operations environment

## General

```{note}
The SUM shall describe the configuration hardware and software of the
environment, the identification of all system components and the hardware,
software, manual operations, and other resources needed for a user to install
and run the software.
```

## Hardware configuration

```{note}
The SUM shall describe through a block diagram the principal hardware
parts of the system, the communications equipment, the computer equipment,
including amount of memory needed, amount of auxiliary storage needed, and
peripheral equipment such as printers and other input/output devices;
```

## Software configuration

```{note}
The SUM shall describe through a block diagram the principal software
parts of the system, including other software, such as operating systems,
utilities, other supporting systems, and other facilities, equipment,
or resources.
```

## Operational constraints

```{note}
The SUM shall explain the what the user can do with the software in
various states and modes of operation, including emergency degraded modes.
```