def default_config():
        # TRANSLATORS: This part of text must be formatted in a monospaced font, and all lines must not exceed the width of a 70-cell-wide terminal.
        config = _(
            "# ===================================\n"
            "# EH Forwarder Bot Configuration File\n"
            "# ===================================\n"
            "# \n"
            "# This file determines what modules, including master channel, slave channels,\n"
            "# and middlewares, are enabled in this profile.\n"
            "# \n"
            "# \n"
            "# Master Channel\n"
            "# --------------\n"
            "# Exactly one instance of a master channel is required for a profile.\n"
            "# Fill in the module ID and instance ID (if needed) below.\n"
        )
        config += "\nmaster_channel:\n\n"
        # TRANSLATORS: This part of text must be formatted in a monospaced font, and all lines must not exceed the width of a 70-cell-wide terminal.
        config += _(
            "# Slave Channels\n"
            "# --------------\n"
            "# \n"
            "# At least one slave channel is required for a profile.\n"
            "# Fill in the module ID and instance ID (if needed) of each slave channel\n"
            "# to be enabled below.\n"
        )
        config += "\nslave_channels: []\n\n"
        # TRANSLATORS: This part of text must be formatted in a monospaced font, and all lines must not exceed the width of a 70-cell-wide terminal.
        config += _(
            "# Middlewares\n"
            "# -----------\n"
            "# Middlewares are not required to run an EFB profile. If you are not\n"
            "# going to use any middleware in this profile, you can safely remove\n"
            "# this section. Otherwise, please list down the module ID and instance\n"
            "# ID of each middleware to be enabled below.\n"
        )
        config += "middlewares: []\n"

        str_io = StringIO(config)
        str_io.seek(0)
        return str_io