Built-in functions: System

@print <value>

print a string to the screen, can print array also

$arr:[1,2,3]

@print $arr

> arr:

> [

> 0 => 1

> 1 => 2

> 2 => 3

> ]

@echo <value>

print a string to the screen

@echo hello

> hello

@shell <string>

exec a command on OS

$str:@shell ls

@print $str

> arr:

> [

> stdout => Documents Downloads file.

> stderr =>

> exit_code => 0

> ]

@input

read string from input

$a: @input

echo $a

< abc

> abc