The TDrawText structure.

 // DrawText
 TDrawText      struct
  Result                sbyte      // The function call result. NO_ERR means it succeeded.
  Location      TLocation  // The location in X, LCD line number coordinates.
  Text          byte[]     // The text to draw on the LCD.
  Options       dword          // The options to use when writing to the LCD.
 TDrawText      ends

See Drawing option constants for valid Options values.