Yesterday Mr Senior told us that "it's not possible to do that".
I (30 years younger) replied I read about that possibility in the manual.
So he challenged me to do it, laughing at me.

Today I went to the office really angry, I put the headphones on, with the song "Suicide Silence - O.C.D." in loop, and after 5 hours I solved the "big problem".

So, go fuck yourself Mr Senior, and RTFM.

Damn, I'm still listening that song.

Le me: writes some handy dandy software for my company

Le my colleague: goes to customer site to do some set up, wants to show customers how do some commands on my tool

Le my colleague: proceeds to open the massive manual I also wrote detailing how to use the tool, closes it immediately saying it's boring

Le my colleague: proceeds to use a very basic command incorrectly, declares it a non-working feature

Le me: ??? *head desk*

MOTHERFUCKER THERE IS EVEN A 'HELP' COMMAND THAT EXPLAINS TO YOU THE SYNTAX IN THE TOOL ITSELF.