ISINDEX - searchable index
The ISINDEX tag causes the
web page to display a text entry field in which the user can type a
string. The intent of this tag is that it "switches on
searching" in the page, but in reality, this tag is useful only if
the page is generated by a CGI program.
The intent is that when the user enters text into the text entry field
and presses the Return key (or clicks an appropriate button on the
browser), the CGI program is invoked again, with the arguments generated
from the data in the text field. The browser outputs a new page whose
content is determined by what the user entered in the text field.
The CGI program should test for the presence of arguments. If there are
none, it should display a default page that includes the ISINDEX tag in
the header. If there are arguments, the script does whatever it needs to
do. The string entered by the user is the first argument, and the
language your script uses determines how you access the first argument.
PROMPT specifies the text that appears as the search
prompt in the browser.