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# **stsimsf**
-**stsimsf** is an open-source [SyncroSim](http://www.syncrosim.com) add-on package to [ST-Sim](https://docs.stsim.net/) for integrating stocks and flows into state-and-transition simulation models.
+**stsimsf** is an open-source [SyncroSim](http://www.syncrosim.com) add-on package to [ST-Sim](https://docs.stsim.net/) for integrating stocks and flows into state-and-transition simulation models.
+
+Note that the *stsimsf* package is deprecated as of the release of SyncroSim 3, as the stocks and flows functionality is now fully integrated with ST-Sim.
* See the [Home page](https://apexrms.github.io/stsimsf/) for an overview of **stsimsf**
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State-and-transition simulation models (STSMs) are used to forecast landscape dynamics. Using the base SyncroSim package, *ST-Sim*, you can design models to forecast the change of discrete variables, such as the expansion/contraction of agricultural lands or harvest of tree plantations (see Daniel, Frid, Sleeter, and Fortin (2016)). Using the ST-Sim Add-On package, *stsimsf*, you can design models to forecast the change of continuous variables as well, such as biomass and carbon fluctuations. For more information on integrating STSMs with stock-flow models, see the paper by Daniel, Sleeter, Frid, and Fortin (2018).
+**The *stsimsf* package is now deprecated, and the stocks and flows functionality is fully integrated with ST-Sim for SyncroSim 3.**
+
## Requirements
This package requires: