| 4!:0 y | Name Class.  Class of (boxed) name: 
 
 
| _2 | invalid |  | _1 | unused |  | 0 | noun |  | 1 | adverb |  | 2 | conjunction |  | 3 | verb |  | 
|  | 
| [x] 4!:1 y | Name List. Result is a list of boxed names 
belonging to the classes 0 to 3 
as defined under 4!:0 above, and 6 for locales.  
The optional left 
argument specifies the initial letters of names to be included. | 
|  | 
| 4!:3 y | Scripts. List of script names that have been invoked 
using 0!:n | 
|  | 
| 4!:4 y | Script Index. Index (in 4!:3 '') 
of the script that defined y , or _1 
if y was not defined from a script. | 
|  | 
| 4!:5 y | Names Changed. 4!:5]0 turns off data 
collection; 4!:5]1 turns it on and produces 
a list of global names assigned since the last 
execution of 4!:5 . | 
|  | 
| 4!:55 y | Erase. |