History of Changes

New Features:

Isotopes now can be added to the atom by using the Text tool.
Enhanced stereochemical notations can be added through the main and context menu.
Lists of atoms can be defined in the periodic table for drawing chemical queries.
It is now possible to draw chemical queries with generic atom types (for example, X for halogens, A for any atom, and so on.)

Improvements:

The license file is checked upon startup.
The license owner is now displayed in the About dialog.
Atoms with custom isotope numbers can be imported and exported.
It is now possible to import and display MRV files containing reactions.
It is now possible to export a single-step chemical reaction. The exported chemical content differentiates the reactants, agents, and products.
Chiral centers are automatically recognized and labeled as absolute.
Atom properties are now available from the main menu.
It is now possible to open the periodic table through the context menu of an atom.
The default position of the charge relative to the atom has been refined.
Improvement in displaying the formula of selected fragments (displaying charge and radical when cutting a covalent bond.)
Molecular weight and the exact mass are now displayed together with the formula.
It is now possible to copy and paste textual information from and to Marvin Pro.
It is now possible to add R-group labels with custom indexes.
User interaction pattern of graphical objects (ellipse, rectangle, arrow, etc) is improved. It is possible to move a selected graphical object by dragging inside its borders.
Snackbar notifications now appear at the bottom-left corner about main events, warnings, and errors.
The public API allows for sending notification at every edit step.
Unique ID is automatically added to all molecules handled on the canvas, and can be retrieved through the public API.

May 13th, 2022: 22.11.0