Page "Introduction to managed metadata" looks to have some misinformation about disallowed characters

Hi @Marcin Laski

Based on the information you provided, I understand that you've noticed a list of disallowed characters in the SharePoint Managed Metadata documentation where the letter "t" appears to be forbidden, and you're looking for clarification on whether this is an error.

The confusion stems from a technical formatting issue on the Microsoft Learn page. In programming and technical documentation, \t is the standard escape sequence used to represent a Tab character.

Due to how the site renders Markdown or HTML, the backslash (\) and the t were likely treated as two separate items in a list or stripped of their connection. Instead of showing "Tab," the UI rendered them as two distinct characters: \ and t.

Based on the older SharePoint CSOM (Client-Side Object Model) documentation or technical specifications for Term labels, they consistently list special characters and "Control Characters" (like tabs or newlines) as restricted but never the letter "t."

To be more explicit, the characters actually being restricted are:

• Structural characters: [ ] ; " , < > | &
• The Backslash: \
• The Tab Character: (represented incorrectly as a standalone t)

In summary, it is a UI rendering and formatting issue on the documentation page. The system is trying to tell you that you cannot use tabs in property names, but it accidentally "broke" the \t token into two pieces.

Thank you for your understanding.

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