TWikiDraw is based on Erich Gamma's JHotDraw 5.1. (JHotDraw is copyright
1996, 1997 by IFA Informatik and Erich Gamma,
erich_gamma@acmSPAMBLOCK.org . It is hereby granted that this software
can be used, copied, modified, and distributed without fee provided that
this copyright notice appears in all copies. ) 

TWikiDraw uses ACME Labs' GifEncoder to convert a drawing into a GIF
file format. (GifEncoder is Copyright (C)1996,1998 by Jef Poskanzer,
jef@acmeSPAMBLOCK.com . All rights reserved. THIS SOFTWARE IS PROVIDED
BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.) 

TWikiDraw uses some ideas of KmWiki drawing applet. 

TWikiDraw: Copyright 2000 by Peter Thoeny, Peter@ThoenySPAMBLOCK.com. It
is hereby granted that this software can be used, copied, modified, and
distributed without fee provided that this copyright notice appears in
all copies. 

Modifications Copyright (C) 2001 Motorola. All Rights Reserved. 

PeterThoeny created TWikiDraw based on above software 

CrawfordCurrie made a number of improvements.