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diff --git a/nucleus/library/structures/string_array.h b/nucleus/library/structures/string_array.h
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+++ b/nucleus/library/structures/string_array.h
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+#ifndef STRING_ARRAY_CLASS
+#define STRING_ARRAY_CLASS
+
+/*****************************************************************************\
+*                                                                             *
+*  Name   : string_array                                                      *
+*  Author : Chris Koeritz                                                     *
+*                                                                             *
+*******************************************************************************
+* Copyright (c) 1993-$now By Author.  This program is free software; you can  *
+* redistribute it and/or modify it under the terms of the GNU General Public  *
+* License as published by the Free Software Foundation; either version 2 of   *
+* the License or (at your option) any later version.  This is online at:      *
+*     http://www.fsf.org/copyleft/gpl.html                                    *
+* Please send any updates to: fred@gruntose.com                               *
+\*****************************************************************************/
+
+#include "object_packers.h"
+
+#include <basis/astring.h>
+#include <basis/byte_array.h>
+#include <basis/functions.h>
+
+namespace structures {
+
+//! An array of strings with some additional helpful methods.
+
+class string_array
+: public basis::array<basis::astring>,
+  public virtual basis::packable,
+  public virtual basis::equalizable
+{
+public:
+  string_array(int number = 0, const basis::astring *initial_contents = NIL)
+          : basis::array<basis::astring>(number, initial_contents,
+                EXPONE | FLUSH_INVISIBLE) {}
+    //!< Constructs an array of "number" strings.
+    /*!< creates a list of strings based on an initial "number" of entries and
+    some "initial_contents", which should be a regular C array of astrings
+    with at least as many entries as "number". */
+
+  //! a constructor that operates on an array of char pointers.
+  /*! be very careful with the array to ensure that the right number of
+  elements is provided. */
+  string_array(int number, const char *initial_contents[])
+      : basis::array<basis::astring>(number, NIL, EXPONE | FLUSH_INVISIBLE) {
+    for (int i = 0; i < number; i++) {
+      put(i, basis::astring(initial_contents[i]));
+    }
+  }
+
+  string_array(const basis::array<basis::astring> &to_copy)
+      : basis::array<basis::astring>(to_copy) {}
+    //!< copy constructor that takes a templated array of astring.
+
+  DEFINE_CLASS_NAME("string_array");
+
+  //! Prints out a formatted view of the contained strings and returns it.
+  basis::astring text_format(const basis::astring &separator = ",",
+          const basis::astring &delimiter = "\"") const {
+    basis::astring to_return;
+    for (int i = 0; i < length(); i++) {
+      to_return += delimiter;
+      to_return += get(i);
+      to_return += delimiter;
+      if (i < last())
+        to_return += separator;
+    }
+    return to_return;
+  }
+
+  basis::astring text_form() const { return text_format(); }
+    //!< A synonym for the text_format() method.
+
+//hmmm: extract as re-usable equality operation.
+
+  //! Compares this string array for equality with "to_compare".
+  bool equal_to(const equalizable &to_compare) const {
+    const string_array *cast = cast_or_throw(to_compare, *this);
+    if (length() != cast->length())
+      return false;
+    for (int i = 0; i < length(); i++)
+      if (cast->get(i) != get(i))
+        return false;
+    return true;
+  }
+
+  //! locates string specified and returns its index, or negative if missing.
+  int find(const basis::astring &to_find) const {
+    for (int i = 0; i < length(); i++) {
+      if (to_find.equal_to(get(i))) return i;
+    }
+    return basis::common::NOT_FOUND;
+  }
+
+  //! Returns true if all of the elements in this are the same in "second".
+  /*! The array "second" can have more elements, but must have all of the
+  items listed in this string array. */
+  bool prefix_compare(const string_array &second) const {
+    if (second.length() < length()) return false;
+    if (!length()) return false;
+    for (int i = 0; i < length(); i++)
+      if ((*this)[i] != second[i]) return false;
+    return true;
+  }
+
+  //! Packs this string array into the "packed_form" byte array.
+  virtual void pack(basis::byte_array &packed_form) const
+      { pack_array(packed_form, *this); }
+  
+  //! Unpacks a string array from the "packed_form" byte array.
+  virtual bool unpack(basis::byte_array &packed_form)
+      { return unpack_array(packed_form, *this); }
+
+  //! Returns the number of bytes this string array would consume if packed.
+  virtual int packed_size() const {
+    int to_return = sizeof(int) * 2;  // length packed in, using obscure.
+    for (int i = 0; i < length(); i++)
+      to_return += get(i).length() + 1;
+    return to_return;
+  }
+};
+
+} //namespace.
+
+#endif
+