Use {% data variables.copilot.copilot_edits_short %} to make changes across multiple files directly from a single {% data variables.copilot.copilot_chat_short %} prompt. {% data variables.copilot.copilot_edits_short %} has the following modes:
{% data reusables.copilot.copilot-edits.edit-mode-description %}
{% data reusables.copilot.copilot-edits.agent-mode-description %}