diff --git a/CommonLibs/Vector.h b/CommonLibs/Vector.h
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+++ b/CommonLibs/Vector.h
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+/**@file Simplified Vector template with aliases. */
+/*
+* Copyright 2008 Free Software Foundation, Inc.
+*
+* This software is distributed under the terms of the GNU Affero Public License.
+* See the COPYING file in the main directory for details.
+*
+* This use of this software may be subject to additional restrictions.
+* See the LEGAL file in the main directory for details.
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Affero General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Affero General Public License for more details.
+
+	You should have received a copy of the GNU Affero General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+
+
+#ifndef VECTOR_H
+#define VECTOR_H
+
+#include <string.h>
+#include <iostream>
+#include <assert.h>
+
+
+/**
+	A simplified Vector template with aliases.
+	Unlike std::vector, this class does not support dynamic resizing.
+	Unlike std::vector, this class does support "aliases" and subvectors.
+*/
+template <class T> class Vector {
+
+	// TODO -- Replace memcpy calls with for-loops.
+
+	public:
+
+	/**@name Iterator types. */
+	//@{
+	typedef T* iterator;
+	typedef const T* const_iterator;
+	//@}
+
+	protected:
+
+	T* mData;		///< allocated data block, if any
+	T* mStart;		///< start of useful data
+	T* mEnd;		///< end of useful data + 1
+
+	public:
+
+	/** Return the size of the Vector. */
+	size_t size() const
+	{
+		assert(mStart>=mData);
+		assert(mEnd>=mStart);
+		return mEnd - mStart;
+	}
+
+	/** Return size in bytes. */
+	size_t bytes() const { return size()*sizeof(T); }
+
+	/** Change the size of the Vector, discarding content. */
+	void resize(size_t newSize)
+	{
+		if (mData!=NULL) delete[] mData;
+		if (newSize==0) mData=NULL;
+		else mData = new T[newSize];
+		mStart = mData;
+		mEnd = mStart + newSize;
+	}
+
+	/** Release memory and clear pointers. */
+	void clear() { resize(0); }
+
+
+	/** Copy data from another vector. */
+	void clone(const Vector<T>& other)
+	{
+		resize(other.size());
+		memcpy(mData,other.mStart,other.bytes());
+	}
+
+
+
+
+	//@{
+
+	/** Build an empty Vector of a given size. */
+	Vector(size_t wSize=0):mData(NULL) { resize(wSize); }
+
+	/** Build a Vector by shifting the data block. */
+	Vector(Vector<T>& other)
+		:mData(other.mData),mStart(other.mStart),mEnd(other.mEnd)
+	{ other.mData=NULL; }
+
+	/** Build a Vector by copying another. */
+	Vector(const Vector<T>& other):mData(NULL) { clone(other); }
+
+	/** Build a Vector with explicit values. */
+	Vector(T* wData, T* wStart, T* wEnd)
+		:mData(wData),mStart(wStart),mEnd(wEnd)
+	{ }
+
+	/** Build a vector from an existing block, NOT to be deleted upon destruction. */
+	Vector(T* wStart, size_t span)
+		:mData(NULL),mStart(wStart),mEnd(wStart+span)
+	{ }
+
+	/** Build a Vector by concatenation. */
+	Vector(const Vector<T>& other1, const Vector<T>& other2)
+		:mData(NULL)
+	{
+		resize(other1.size()+other2.size());
+		memcpy(mStart, other1.mStart, other1.bytes());
+		memcpy(mStart+other1.size(), other2.mStart, other2.bytes());
+	}
+
+	//@}
+
+	/** Destroy a Vector, deleting held memory. */
+	~Vector() { clear(); }
+
+
+
+
+	//@{
+
+	/** Assign from another Vector, shifting ownership. */
+	void operator=(Vector<T>& other)
+	{
+		clear();
+		mData=other.mData;
+		mStart=other.mStart;
+		mEnd=other.mEnd;
+		other.mData=NULL;
+	}
+
+	/** Assign from another Vector, copying. */
+	void operator=(const Vector<T>& other) { clone(other); }
+
+	//@}
+
+
+	//@{
+
+	/** Return an alias to a segment of this Vector. */
+	Vector<T> segment(size_t start, size_t span)
+	{
+		T* wStart = mStart + start;
+		T* wEnd = wStart + span;
+		assert(wEnd<=mEnd);
+		return Vector<T>(NULL,wStart,wEnd);
+	}
+
+	/** Return an alias to a segment of this Vector. */
+	const Vector<T> segment(size_t start, size_t span) const
+	{
+		T* wStart = mStart + start;
+		T* wEnd = wStart + span;
+		assert(wEnd<=mEnd);
+		return Vector<T>(NULL,wStart,wEnd);
+	}
+
+	Vector<T> head(size_t span) { return segment(0,span); }
+	const Vector<T> head(size_t span) const { return segment(0,span); }
+	Vector<T> tail(size_t start) { return segment(start,size()-start); }
+	const Vector<T> tail(size_t start) const { return segment(start,size()-start); }
+
+	/**
+		Copy part of this Vector to a segment of another Vector.
+		@param other The other vector.
+		@param start The start point in the other vector.
+		@param span The number of elements to copy.
+	*/
+	void copyToSegment(Vector<T>& other, size_t start, size_t span) const
+	{
+		T* base = other.mStart + start;
+		assert(base+span<=other.mEnd);
+		assert(mStart+span<=mEnd);
+		memcpy(base,mStart,span*sizeof(T));
+	}
+
+	/** Copy all of this Vector to a segment of another Vector. */
+	void copyToSegment(Vector<T>& other, size_t start=0) const { copyToSegment(other,start,size()); }
+
+	void copyTo(Vector<T>& other) const { copyToSegment(other,0,size()); }
+
+	/**
+		Copy a segment of this vector into another.
+		@param other The other vector (to copt into starting at 0.)
+		@param start The start point in this vector.
+		@param span The number of elements to copy.
+	*/
+	void segmentCopyTo(Vector<T>& other, size_t start, size_t span) const
+	{
+		const T* base = mStart + start;
+		assert(base+span<=mEnd);
+		assert(other.mStart+span<=other.mEnd);
+		memcpy(other.mStart,base,span*sizeof(T));
+	}
+
+	void fill(const T& val)
+	{
+		T* dp=mStart;
+		while (dp<mEnd) *dp++=val;
+	}
+
+	void fill(const T& val, unsigned start, unsigned length)
+	{
+		T* dp=mStart+start;
+		T* end=dp+length;
+		assert(end<=mEnd);
+		while (dp<end) *dp++=val;
+	}
+
+
+	//@}
+
+
+	//@{
+
+	T& operator[](size_t index)
+	{
+		assert(mStart+index<mEnd);
+		return mStart[index];
+	}
+
+	const T& operator[](size_t index) const
+	{
+		assert(mStart+index<mEnd);
+		return mStart[index];
+	}
+
+	const T* begin() const { return mStart; }
+	T* begin() { return mStart; }
+	const T* end() const { return mEnd; }
+	T* end() { return mEnd; }
+	//@}
+	
+
+};
+
+
+
+
+/** Basic print operator for Vector objects. */
+template <class T>
+std::ostream& operator<<(std::ostream& os, const Vector<T>& v)
+{
+	for (unsigned i=0; i<v.size(); i++) os << v[i] << " ";
+	return os;
+}
+
+
+
+#endif
+// vim: ts=4 sw=4