Posted: March 17, 2014 14:19 by superinventor
Yes, this could be a "Frequently Asked Question" because the game has no documentation or anything to tell the player how to play.
In all versions, click on a plot and choose a button to choose what to do with it. The buttons may be represented differently in different versions.
In versions 1.6 through 2.9.9, you can pan through the world with the arrow keys on your keyboard.
In versions 3.0 and beyond, you can pan through the world by moving the cursor to the edge of the screen. You can also scroll through the layers of the world with the mouse wheel.