========================================================================
License Notice regarding FreeXL Integration
========================================================================

The source code contained within this directory is based on FreeXL,
originally developed by Alessandro Furieri and other contributors.

FreeXL is originally distributed under a Tri-License model, which
permits users to choose from the following three licenses:
  1. Mozilla Public License Version 1.1 (MPL 1.1)
  2. GNU General Public License Version 2.0 or later (GPL v2.0 or later)
  3. GNU Lesser General Public License Version 2.1 or later (LGPL v2.1 or later)

Since our main application is licensed under the GPL v2.0 or later,
we hereby elect to use and redistribute this modified version of FreeXL
under the terms of the GNU General Public License Version 2.0 or later
(GPL v2.0 or later) to ensure full compatibility.

The original "COPYING" (which details the MPL text) and "AUTHORS"
files are retained in this directory without modification to preserve
the original copyright notices and author credits.

------------------------------------------------------------------------
Modifications:
- Modified by: Hiroyuki Ito
- Date: October 2026
- Description: Integrated into the project with minor modifications
  for cross-platform compilation (Linux, macOS, Windows).
========================================================================
