Is \ must in cid?

[shisbn]

[Enter feedback here]
I have a question.
There is an example &cid=custom_campaign in this page. Can I use &cid=custom_campaign without ** \ ** because it works well when I test in browser? Currently both could open my app page in MS store.

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Document Details

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• ID: 19da496f-5bb3-8b60-ad77-93aebb828725
• Version Independent ID: ba0ef101-89fa-77b5-be17-a0b8b92ca0eb
• Content: Create a custom app promotion campaign - UWP applications
• Content Source: windows-apps-src/publish/create-a-custom-app-promotion-campaign.md
• Product: uwp
• Technology: publish
• GitHub Login: @hickeys
• Microsoft Alias: hickeys

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