Integrative Levels Classification project ILC2 schedules developing schedules how it works people references
ILC class stir

ILC developing version
Expanded class stir

   ▲  broader class

▽ ⌕         stir                 trams; streetcars or trolleys
 
Connected classes:
 

specificity 
current: 99 

   
Move to another main class:
a b c d e f g h i j k l m n o p q r s t u v w x y

or

or insert a term and do a new