Probably the most helpful page I've ever seen on the Microsoft documentation website. My only criticism is that the outputs of the examples should be shown. I understood most of them (though I had to try the population one myself since I've never seen that format string before), but a beginner might not.

Document Details

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• ID: 0a8798d6-ed43-d6eb-44b2-237aa6d5c65d
• Version Independent ID: af4923e4-f78e-68b6-7f3b-e68dccf6037d
• Content: Everything you wanted to know about variable substitution in strings - PowerShell
• Content Source: reference/docs-conceptual/learn/deep-dives/everything-about-string-substitutions.md
• Product: powershell
• Technology: powershell-conceptual
• GitHub Login: @sdwheeler
• Microsoft Alias: sewhee