Opl-1 License Portable -

was released in 1999 specifically for written works, such as technical documentation and books. Copyleft Nature:

Most developers assume "strong copyleft = GPL." But OPL-1 is different in subtle yet critical ways. opl-1 license

The OPL-1 was approved by the OSI in 2002, marking it as an "Open Source" license. However, it never gained the widespread adoption of the GPL or the Apache License, and it is now considered deprecated by most legal standards. was released in 1999 specifically for written works,

If you cannot get permission from all contributors, your project is effectively frozen on OPL-1 forever. You will need to fork the code, remove the OPL-1 parts, and rewrite them from scratch under a modern license. However, it never gained the widespread adoption of

It is strictly forbidden to sell, sub-license, or redistribute the software or any modified versions of it.