Mnemonics:

+ string.charat 
- string tokenizer (to llist or array?)

- llist create
- llist add
- llist reset
- llist next
- llist peek
- llist remove
- llist for_each

+ sleep 

General
- LList handling 
+ array handling
+ suspensing VM for time (sleep + stack dump)
+ add stack overflow checks everywhere
- program object methods + instance overloading
- execution cost for programs
- security mechanism on interface_funs

