License: Published under the GNU Free Documentation License. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License."
≅ SiSU Spine ፨ (object numbering & object search)
(web 1993, object numbering 1997, object search 2002 ...) 2023