To find me is man's great desire, a need that fuels the waning fire, Without me, things are of no use, a man, with me, can fell a mighty space, without me, falls to his own ire.

In the past I was ten to the power of four, but now I can be less or I can be more. Some people would say that as a noun I'm improper, but noun before adjective, in that form I first prospered.

I am used to enter, but I am not used to exit. You can find me in movie theaters and concerts.

On digits I'm all different, but come in three styles. I'm in every scripture, novel, each and all files. Blue ones of me are designers' magnum opus. To a specific machine, I am their focus.

Turn me on my side and I am everything. Cut me in half and I am nothing.