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JMRI is...

Signaling

Adding signals to your layout with JMRI.

General Tools

JMRI provides powerful tools for working with your layout.

Layout Automation

JMRI can be used to automate parts of your layout, from simply controlling a crossing gate to running trains in the background.

JMRI: Signal Masts

Background information on JMRI Signal Masts

The JMRI "SignalMast" objects allow you to display prototypical aspects on signals. For background information, see the Aspect Signaling page.

Signal Masts are configured through the Signal Mast Table You add new ones with the "Add..." button on the table, which takes you to the "Add Signal Mast" window.

From the table, you can set individual signal masts to any aspect that they're able to display by clicking in the "Aspect" column.