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+# Evaluation version
+
+This repository contains an evaluation version of **P-Net**, a P-Net stack
+for master implementations. It is easy to use and provides a small
+footprint. It is especially well suited for embedded systems where resources
+are limited and efficiency is crucial. It is written in C and can be run
+on an RTOS such as rt-kernel, FreeRTOS, or on Linux.
+
+It does not contain any ports and cannot be built without adding additional sources.
+
+See [readme](../../README.md) for more information on the complete version of the stack and the [releases](https://github.com/rtlabs-com/p-net/releases)  for binary downloads for common targets.
+
+This version of P-Net can be used for evaluation purposes
+only. Contact <sales@rt-labs.com> if you intend to use this stack in a
+product or if you need assistance during evaluation. The commercial
+version of this stack is supplied with full sources.