How to add text and captions

Steps

1. Press T for the Text tool.

2. Click an empty spot on the canvas, for example under a structure, and type.

   

3. Press Esc or click elsewhere to finish. Click the text again with the Text tool to edit it.

Clicking an atom with the Text tool edits that atom's label instead. See How to type atom labels like CO2Et or NHBoc.

Format text

Select the text, or part of it while typing, and use:

Command	Shortcut
Bold text	Ctrl+B
Italic text	Ctrl+I
Align text left	Ctrl+Shift+L
Align text center	Ctrl+Shift+C
Align text right	Ctrl+Shift+R

They are also in Edit › Text, with Format chemistry as you type, which writes the numbers in formulas such as H2SO4 as subscripts while you type.