Erjang shell does "Hello World!"

The Erjang/OTP shell in action!  
 
(For some reason it does not print the prompt; don't let yourself be confused by that).
 
krab$ ./erl.sh 
Eshell V5.7.3  (abort with ^G)
erlang:display("hello world!").
"hello world!"
true
 
erlang:processes().
[PID<:39>,PID<:349>,PID<erl_prim_loader:3>,
 PID<error_logger:24>,PID<:38>,PID<inet_db:57>,PID<init:1>,
 PID<kernel_sup:43>,PID<:354>,PID<global_name_server:51>,
 PID<:54>,PID<global_group:72>,
 PID<application_controller:26>,PID<:53>,PID<:273>,
 PID<rex:47>,PID<:548>,PID<kernel_safe_sup:357>,
 PID<code_server:83>,PID<standard_error:267>,PID<:55>,
 PID<file_server_2:75>,PID<standard_error_sup:266>,
 PID<user:284>]
 
erlang:system_info(allocated_areas).
[{'non_heap:CMS Perm Gen',45293568,39785736},
 {'heap:CMS Old Gen',50331648,11012616},
 {'heap:Par Survivor Space',2097152,2097152},
 {'heap:Par Eden Space',12582912,3554304},
 {'non_heap:Code Cache',3903488,3875648}]
 
erlang:system_info(heap_type).
shared
 
erlang:system_info(os_type).
{unix,"Mac OS X"}
 
 
foobar:non().
[compiling lib:219ms]** exception error: undefined function apply/2
     in function  erl_eval:do_apply/5
     in call from shell:exprs/6
     in call from shell:eval_exprs/6
     in call from shell:eval_loop/3
     in call from apply/2
 
erlang:halt().
krab$