Console intro
Complete descriptions of the console commands and variables are now available (in handy categorized lists and a complete alphabetical list for reference). Check out the Console categories page for descriptions of the categories, or just click any of the category links on the left (under Console Help -- yeah, the ones that weren't there when you were on the main page).
One way to get the console to work, is to edit the text file kingpin/main/autoexec.cfg and add this line:
set developer 1
Then you'll be able to open (or close) the console with the ~ key (that's a TILDE, and it's on the key on the upper-left of your keyboard, under ESCAPE, with the wiggly line and the left-tic on it!) Note that in some foreign versions, such as the British release of Kingpin, the console will not work unless you edit the autoexec.cfg as described above and add +developer 1 to the Kingpin shortcut If, for some reason, that doesn't work, edit kingpin/main/autoexec.cfg and add the line:
bind ~ "toggleconsole"