Understanding Label Attributes in SAMSON’s Node Specification Language (NSL)

For molecular modelers, structuring and navigating molecular systems efficiently is crucial. One common challenge is dealing with labels and annotations that make models more insightful and easier to interpret. In SAMSON, the Label Attributes in the Node Specification Language (NSL) are here to help.

If you’re wondering what label attributes do, they belong to the label attribute space (short name: la). These attributes are defined explicitly to match only label nodes, making it easier to control visibility, selection, and naming functionalities. Let’s explore how these attributes can address typical molecular modeling pains like managing large datasets and streamlining workflows.

Key Attributes for Labels

The Label Attributes space in NSL provides you with total control over labels. Here are the main attributes you can use and their significance:

Attribute name	Short name	Possible values	Examples
hidden	`h`	`true`, `false`	`la.h` `not la.h`
name	`n`	strings in quotes	`la.n "A"` `la.n "L*"`
selected		`true`, `false`	`la.selected` `not la.selected`
selectionFlag	`sf`	`true`, `false`	`la.sf false` `la.sf`
visibilityFlag	`vf`	`true`, `false`	`la.vf false` `la.vf`
visible	`v`	`true`, `false`	`la.v` `not la.v`

Examples in Practice

Here’s how these attributes can make a difference:

Managing Visibility: Use la.h to hide labels that aren’t immediately relevant to avoid clutter. Combine it with not la.h to find hidden labels when needed.
Custom Label Names: With the la.n attribute, you can assign searchable names (e.g., la.n "HelixA") and even query them using wildcards like la.n "L*". This is immensely helpful for filtering structures by name.
Selection Management: Ensure only critical labels are selected using the la.selected attribute while leaving others unselected for clarity.
Highlighting: Attributes like la.v (visible) and la.sf (selectionFlag) help adjust what is actively highlighted.

These capabilities not only make your molecular modeling workflow more intuitive but also improve collaboration by allowing you to share meaningful annotations and labels with your team.

Why Focus on Label Attributes?

Labels are not just annotations—they are the backbone of how data is interpreted in molecular design. Mismanagement of label visibility or selection can lead to miscommunication or missed opportunities to uncover insights within a molecular structure. By mastering the label attribute space in NSL, you’ll enhance both your efficiency and clarity in molecular modeling workflows.

To dive deeper into each attribute and see additional examples, visit the official SAMSON documentation page: https://documentation.samson-connect.net/users/latest/nsl/label/

SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON at https://www.samson-connect.net.