Starts a loop block which will loop until loop-condition is no longer satisfied.
This is much like while loops in most standard programming languges. The first condition can be set to (true or false), and the loop-condition uses the conditional operators (<<, >>, ==, !=, <=, >=,
command is the command that's carried out at the end of the loop. Often times loops include incrementing a variable as the command at the end of the loop. An example loop would be "loop:true;var.i<<30;var:i=var.i+1" which would loop until the variable "i" was over 30.
When inside of a loop, the variable being used can be referenced by using "[]" brackets i.e: "dom.a.[var:i].innerhtml=foo" would set all of the link names in the loop range to "foo".
All loops must include an endloop call afterwards at risk of looping infinitely.
This is an example of a regular counter style loop...