Athanor by arbastro
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Accessibility settings

Choose File › Settings… › Accessibility and switch on Reduce motion, Larger targets or High-contrast selection. Alt+period and Alt+comma move through the atoms of a structure with the keyboard.

Settings

Choose Main menu › File › Settings…, then Accessibility.

Settings › Accessibility with Reduce motion, Larger targets and High-contrast selection.Settings › Accessibility with Reduce motion, Larger targets and High-contrast selection.

Switch Does
Reduce motion Less movement in the app
Larger targets Bigger targets to click and tap
High-contrast selection A selection that stands out more

They are kept on this device and move with your preferences file.

With the keyboard and a screen reader

The canvas describes what is on it, such as the formula, atom count and SMILES of each structure. Alt+. and Alt+, move through the atoms, and Alt+/ steps to a bonded neighbor. Each atom is read out as you reach it, for example "Carbon 1 of 2, in CH3Cl. Bonded to chlorine. 3 hydrogens." Press Enter to open its properties.

See also alt text for exports and color vision previews.

Files and formatsHow to write alt text for an exported figureIn Export (Ctrl+Shift+E), the Alt text box is filled from the name, formula and SMILES. Edit it to say what matters; the Accessibility row reports any issues.Styles and journal formatsHow to preview for color vision deficiencyChoose View › Color vision and a preview: protanopia, deuteranopia, tritanopia or achromatopsia. Choose it again to turn the preview off.

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Last updated Nov 12, 2026