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Standart text tool
Summary
Use Standart text tool to add standart text labels e.g. orbitals symmetry to the molecular orbitals diagram or spectrum diagram
Usage
Click the
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To select other then "sigma" standard label - hold the left mouse button on the icon for some time and select the needed icon in the unfolded drop-down list.
Then click on the diagram space where you want to add the text.
Note
Use the menu item Edit ---> Undo/Redo (or shortcut Ctrl+Z/Ctrl+Y) to undo/redo the actions.