Text Tool
Summary
Use Text tool to add/edit text labels on the molecular orbitals diagram or spectrum diagram
Usage
Click the
icon in Draw Tools. Then click on the diagram space where you want to add/edit the text to.
To use different formatting styles use the Format panel (like you do it in the most rich-text processors):
To use it select some text fragment and select the needed style in the Format panel;
Note
Use the menu item Edit ---> Undo/Redo (or shortcut Ctrl+Z/Ctrl+Y) to undo/redo the actions.