# 9. Notation¶

This chapter shows the formatting conventions used throughout the User Guide.

The command-line is an interactive session for issuing commands to the operating system. Examples include a DOS prompt on Windows, a command shell on Linux, and a Terminal window on MacOS.

The User Guide represents a command window like this:

# This is a comment.
> (This is the command prompt, where you enter a command)
(If shown, this is sample output in response to the command)


For example, to see a list of files in the current directory on Linux or MacOS:

# List all Python files.
> ls  *.py
EnergyPlusToFMU.py   makeExportPrepApp.py   ...


Note that your system may use a different symbol than “>” as the command prompt (for example, “\$”). Furthermore, the prompt may include information such as the name of your system, or the name of the current subdirectory.