DELPHI Unit File Structure

UnitUnit1;Interface  {Interface section begins}uses  {Reference Unit list, which is optional if the containing must immediately follow the interface keyword}  {The Interface section declares constants/types/variables/procedures and functions, which are like their own declarations for reference units}  {procedures and functions that are declared in the interface section are like using the Forward keyword}  {End of Interface Section}Implementation  {Implementation Part}uses  {If you include uses words, you must follow the keyword implementation}  {The procedures and functions defined in interface are implemented here, and can be defined and invoked in any order.}  {a list of procedures and functions can be omitted here, if included, must be the same.}  {You can define cell-private constants/types (including classes)/variables/procedures and functions, but these are not visible to clients of the referencing unit}{$R *.DFM}  {if it is a corresponding form of the cell file, there will be this sentence. The $R directive is used to load an external resource file, which is a form file loaded with the same name that is compiled together.}initialization  {Initialization Section}  {the program executes at startup and executes sequentially}  {before the initialization code of a unit runs, it runs the initialization portion of each cell it uses .}Finalization  {end part, execution at end of program}End.

DELPHI Unit File Structure