# Faq/Math/da

< Faq

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## Editing

- How do I put a left bracket without including a right one?
- How do I get * as a superscript? Using
**x^***produces an error. - When I enter one of the symbols
**#**,**&**,**|**,**"**,**%**,**^**or - When I enter 3xy the number 3 appears in italics. Why ?
- How do I use a binary operator (such as union or direct sum) as a large operator (such as sum or product)?
- How do I use a symbol not provided in Math's Catalog of characters?
- How do I use the symbol ↦ (a right arrow that starts with a vertical line)?
- How do I get better double arrows for balanced chemical reactions?
- Which Math constructions are not available in
*Elements*panel? - How do I get back the
*Elements*panel? - Placeholder for an untranslated question
- The formula displayed in the document window is too small. How do I zoom it without changing its size in the document?
- What are the Math keyboard shortcuts?
- Is there a tool to create math formulae more easily? - Yes: The extension Dmaths.org!