After saving to clear the form?

You would have to use scripts to clear your fields and comboboxes with an event OnAfterClick on your save button.

procedure Form_Button_save_OnAfterClick (Sender: string);

  begin
     form.field1.Clear;
     form.field2.Clear;
     form.combobox1.dbItemID := -1; ; 
     form.combobox2.dbItemID := -1; 
   end;

Hello Gilberto_Schiavinatto

Something like this ?

JB

Hello Gilberto, Jean, Thierry,

As Gilberto suggests, a button action to SAVE but also stay on the form and clear all fields ready for the next record to be entered would by useful.
I currently clear my forms in the same way as suggested by Thierry and Jean.
What I also do by script is, after having cleared the fields, add the option to 'repeat' the previous field value by using a reserved character (the '=' is an obvious choice but anything can be used).  Why?  Using Jean's example, you may have 10 different books by the same author so you don't want to retype the author every time.
I also change the field label after the first 'SAVE' to remind the User of this option (I have some  very forgetful users!).
I have used Jean's example (thanks, Jean) to show how I do this.
Hope it helps.
Derek.