## *Core App*: mapSourceAndTarget
### Note: This app is pre-installed in Cytoscape 3.10 or later
**_You should not download this app_ from the store yourself. If Cytoscape detects that a new version is available in the App Store, it will notify you as it's starting and will give you a chance to download it directly.**
**_You should not download this app_ if your Cytoscape is earlier than 3.10. An earlier version of this app is pre-installed in your Cytoscape, and this app cannot replace it.**
This is a simple app that adds source and target columns to the edge table. It allows users to select which node columns they want to use, and then creates equations in the edge table that map to the appropriate columns in the node source and target. We use equations so that they can map any changes to the node columns.