printing header text

hi,

when i went through smart form code ,i found the following code for printing texts for items(me23n--

>texts)

in TEXT node in smartform (for printing item text):

TYPE: INCLUDE TEXT

TEXT NAME : &G_TEXT_KEY&

TEXT OBJECT: EKPO

TEXT ID: F01

LANGUAGE: &SY-LANGU&

How to create text name,text object,text id?

when i gave text name & text id in SO10 &then display it's giving message Text Id F01 for Text Object TEXT does not exist.

how to create text object EKPO instead of TEXT.where can i see this TEXT OBJECT option.

how can i print header texts in ME23N?

please help?