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+====== Icarus Verilog Glossary ======
+<code>Throughout Icarus Verilog descriptions and source code, I use a
+variety of terms and acronyms that might be specific to Icarus
+Verilog, have an Icarus Verilog specific meaning, or just aren't
+widely known. So here I define these terms.
+LRM     - Language Reference Manual
+    This is a generic acronym, but in the Verilog world we sometimes
+    mean *the* language reference manual, the IEEE1364 standard.
+PLI     - Programming Language Interface
+    This is a C API into Verilog simulators that is defined by the
+    IEEE1364. There are two major interfaces, sometimes called PLI 1
+    and PLI 2. PLI 2 is also often called VPI.
+UDP     - User Defined Primitive
+    These are objects that Verilog programmers define with the
+    "primitive" keyword. They are truth-table based devices. The
+    syntax for defining them is described in the LRM.
+VPI     -
+    This is the C API that is defined by the Verilog standard, and
+    that Icarus Verilog partially implements. See also PLI.
+VVM     - Verilog Virtual Machine
+    This is the Icarus Verilog runtime that works with the code
+    generator that generates C++.
+VVP     - Verilog Virtual Processor
+    This is the Icarus Verilog runtime that reads in custom code in a
+    form that I call "VVP Assembly". See the vvp/ directory for
+    documentation on that.
+</code>

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