Is anyone familiar with "VELCRO" as a term for a debugging level?

In an older software package, I noticed an interesting "logging level" in the options for debug message output. The list included D开发者_开发技巧EBUG, WARNING, ERROR, FATAL, VELCRO, TRACE and STREAM. (Listed in that order.)

Might anyone have any idea what a "velcro" debuging message might be? It does not apperar to be a term related to the API or any other part of the application's framework. I assume it to be an older 1990s-era debugging term.

Is anyone familiar with this term?