As a molecular researcher or modeler, we’re often juggling intricate tasks that require experimentations, iterations, and precise modifications. But what happens when you make a mistake, or need to revert to a prior state in your molecular model? In the highly complex world of molecular design, being able to systematically undo or redo operations can save hours of frustration and effort.
SAMSON, the integrative molecular design platform, equips users with a detailed and intuitive history-based workflow for undoing and redoing actions. Let’s explore how you can master this feature and integrate it into your modeling workflow with ease.
Delve into the History View
Central to SAMSON’s history management is the History view. It offers a snapshot of all undoable actions for each document handled by SAMSON. Instead of relying on intuition or memory for previous states, this view provides visual navigation through the sequence of operations.
You can activate the History view through the menu (Interface > History) or by shortcut:
- On Windows/Linux: Ctrl+3
- On Mac: Cmd+3

Effortless Undo and Redo: Shortcuts That Matter
The power to undo and redo operations is designed to work seamlessly in SAMSON. Whether you’re rolling back an incorrect binding interaction or re-establishing an earlier protein conformation, a single key combination lets you navigate through your molecular history:
- Undo: Use Ctrl+Z on Windows/Linux or Cmd+Z on Mac.
- Redo: Use Ctrl+Y on Windows/Linux or Cmd+Y on Mac.

State-Based Control with the History View
The History view is more than a simple undo-redo feature. Users can navigate the history timeline by clicking on specific actions. Each click restores the document to its respective state at that moment. This granular control allows you to revisit earlier models, explore previous setups, or try alternative pathways for molecular configurations without repeating tasks from scratch.
Key Notes to Keep in Mind
While this system operates elegantly, not every operation in SAMSON is fully undoable. Intervening actions that are not recorded in the history may disrupt the undo chain. For this reason, it is recommended to regularly save your work and be cautious when incorporating non-undoable operations into your workflow. For additional guidance, you can consult SAMSON’s documentation on history.
Conclusion
Mastering the History view and undo-redo functionalities in SAMSON bridges the gap between exploration and precision, allowing molecular professionals to work faster and with confidence. Incorporating these tools into your workflow mitigates frustration and opens the door for iterative, state-guided molecular modeling.
For a more in-depth exploration, visit the detailed original documentation here: https://documentation.samson-connect.net/users/latest/history/.
SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON here: https://www.samson-connect.net.
