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fDesc[0] = "The goal of DotGNU Portable.NET is to build a suite of Free Software tools to compile and execute applications for the Common Language Infrastructure (CLI), which is often referred to as &quot;.NET&quot;.<br /> The initial target platform was GNU/Linux, but DotGNU Portable.NET has been known to work under Windows, NetBSD, FreeBSD, Solaris, and MacOS X, amongst others. It also runs on a variety of CPUs including x86, PPC, ARM, Sparc, s390, Alpha, ia-64, and PARISC. otGNU Portable.NET is focused on compatibility with the ECMA-334 and ECMA-335 specifications for C# and CLI, and with Microsoft&#039;s commercial CLI implementation. Our main goal is to make it easy to write portable application programs which work well both on DotGNU Portable.NET and on Microsoft&#039;s .NET platform. The runtime engine in DotGNU Portable.NET, called &quot;ilrun&quot;, is used to interpret programs in the Common Intermediate Language (CIL) bytecode format, described in the ECMA-335 specifications. Because interpreting CIL bytecode directly is quite inefficient, we take a different approach. We first convert the CIL bytecode into a simpler instruction set for what we call the Converted Virtual Machine (CVM). The simpler CVM instructions are then executed using a high-performance interpreter. The CVM approach gives us many of the benefits of a Just-In-Time compiler (JIT), in that the opcodes can be tailored to handle system differences (e.g. 32-bit vs 64-bit CPU&#039;s). At the same time, the engine&#039;s source code is highly portable to new platforms. The DotGNU Portable.NET Forms implementation is structured into three layers, which are found in the source directories System.Drawing, System.Drawing/Toolkit, and System.Windows.Forms.";

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