Learned from my son, the engineer, just after he began work with IBM
a few years ago.  "Nice place to work, but they have a really serious
TLA problem"  Three Letter Acronym.  More importantly, there's
actually a technical term for that process Ben advocated recently (if
memory serves correctly) about loosening some stuck part with a big
hammer.  It's called "percussive maintenance"   Who knew that
smacking something as a process actually has a name.