Slackware Pkg Mgr lists test package
 

Installed Porteus just today .. which accesses Universal Slackware Package Manager. It lists as downloadable and installable an item:

test-package-name-1.2.3-x86_64-1.txz

and I would like to know what it is before ... well, .. you know.

Thank you in advance.

you are asking in the wrong place: Slackware is not Porteus and does not use that package manager neither it provides that package.

the Porteus support forum is here

https://forum.porteus.org/

Thank you for the redirect. The Universal Slackware Package Manager title led me here. I will head over to Proteus.