what are a few ways to organize a technical document? what role does time or duration play in organization of a technical document?

What is the central idea in this advice from branch rickey to jackie robinson?  

Laugh and be merry, remember, better the world with a song,    better the world with a blow in the teeth of a wrong.    laugh, for the time is brief, a thread the length of a span.    laugh and be proud to belong to the old proud pageant of man. (laugh and be merry/john masefield/public domain) which of these is the main idea of the poem?

If you want to change from landscape orientation to portrait orientation, what would you do? turn the camera around. flip the camera over. turn the camera 90 degrees. turn the camera 360 degrees.