Control Structures

if/else

if (boolean)

{}

else if (boolean)

{}

else

{}

while

while (boolean)

{}

repeat until

repeat {} until (boolean)

for

for x from a to b by c

is the general case. You don't need to specify whether it's going up or down - although doing so by using upto or downto does allow a runtime check to make sure you didn't screw up.

If you don't specify "c", it defaults to incrementing/decrementing by 1. The first iteration is at a and the last is at b (that is to say, it goes from a to b, inclusive).

foreach

foreach x in map

{}

See http://kolmafia.sourceforge.net/advanced.html#maps for details.