Several html-documents, demonstrated consequtively, can be created by consequtively 'select ...' of the same transaction of DBMS. Each 'select ...' (extracting data into Internet/Intranet) stops execution of transaction until input from client, and is savepoint - DBMS can rollback database to last so savepoint, obtaining bament <?back/?>. So pressing button "Back" in browser must not only demonstrate previous html-document, but also submit bament <?back/?>. And button "Next" must be implemented in browser menu to submit bament <?next/?>, and to inform to continue transaction. Besides this, button "Commit" must be implemented in browser menu to submit bament <?commit/?>, commiting transaction in current savepoint.
Button "Add", "Dell", "All" must be implemented in browser menu.
Pressing button <input type=submit> (<button type=submit>)
with unspecified attribute name
submits form without attaching value of attribute value of this button.
Property save=yes of form means, that at saving html-document (pressing Ctrl-S), input fields will be saved together with values, entered into them.