Create an instruction at the specified address
     ea - linear address
returns: 0 - can't create an instruction (no such opcode, the instruction would
             overlap with existing items, etc)
         otherwise returns length of the instruction in bytes

long create_insn(long ea);

Make function frame
     ea      - any address belonging to the function
     lvsize  - size of function local variables
     frregs  - size of saved registers
     argsize - size of function arguments that will be purged
               from the stack upon return
returns: ID of function frame or -1
         If the function did not have a frame, the frame
         will be created. Otherwise the frame will be modified

long set_frame_size(long ea, long lvsize, long frregs, long argsize);

Get the NAME of a thread
     idx - number of thread, is in range 0..get_thread_qty()-1
           or -1 for the current thread
returns: required info

string getn_thread_name(long idx);

Do flags contain byte value? (i.e. has the byte a value?)
if not, the byte is uninitialized.

#define has_value(F)   ((F & FF_IVL) != 0)     // any defined value?

set a function attribute
     ea    - any address belonging to the function
     attr  - one of @hlpIdcget_func_attr[FUNCATTR_...] constants.
     value - new value of the attribute
returns: 1 - ok
         0 - failed

success set_func_attr(long ea, long attr, long value);

Create a local variable
     start, end - range of addresses for the local variable.
                  For the stack variables the end address is ignored.
                  If there is no function at 'start' then this function.
                  will fail.
     location  -  the variable location in the "[bp+xx]" form where xx is
                  a number. The location can also be specified
                  as a register name.
     name      -  name of the local variable
returns: 1-ok, 0-failure

success define_local_var(long start, long end, string location, string name);

  'ea' is a linear address
  'success' is 0 if a function fails, 1 otherwise
  'void' means that function returns no meaningful value (always 0)
  'anyvalue' means that function may return value of any type