# File Springz.rb, line 136
        def Springz.apply_all( iterations=1, avoid_collisions=true )
                avoid_collsions = !!avoid_collisions
                
                iterations=iterations.to_i

                t0 = Time.new
                iterations.times { |i|
                        @@all.each{ |spring| spring.apply( avoid_collisions ) unless spring.disabled }
                        prevent_collisions if avoid_collisions
                }
                t3 = Time.new

                #$stderr.puts "Applied #{@@all.length} Springz #{iterations} times #{avoid_collisions ? '(avoiding collisions) ' : ''}in in #{(t3-t0).round_to(2)} seconds" unless iterations==1
        end