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Do you know a way to add SQL, Perl, C# or any other programming language's keywords as a custom language to OneNote?

We use OneNote to document our work.

When I add code (SQL, other) to a new page, the code goes red, since the spelling is not correct German (surprise). I'd like to be able to assign a language..

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Having worked with it a lot, I can personally vouch that there is nothing in the underlying OneNote document model or APIs that allows for control over what is spell-checked or not. If there were, it would be possible to write an add-in to mark blocks of text as code (which is something I have been wanting to do for a long time), but so far it is not possible given the many limitations of the OneNote API.

Others seem to concur: How can spell checking be turned off for a portion of a OneNote page .

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