I come with a very basic tip, but why not, which was almost insignificant before FileMaker 14 but very nice since the brand new formula editor and script workspace. With OS X, you can easily type a ¶ with these shortcuts :
|US + EN||[ alt ] + [ 7 ]|
|FR||[ alt ] + [ § ]|
|CH||[ alt ] + [ $ ]|
To find it for another keyboard, activate the Keyboard Visualizer on your OS X System Preferences, open it with the special menu, and type alt to see where is this useful char...