Submit buttons and param name

[drood]

This allows a user to look for data on 2 different servers.

#########################
print submit(-name=>'choice', -value=>'Check Main Server ');
print "<br>";
print submit(-name=>'choice', -value=>'Check Local Server');
##########################

When I check which button is selected using:

#############################
foreach $name ( param() ) {
$value = param($name);
print "$name = $value<br>";
}
#############################

, I either get:

local = Check Local Server
or
main = Check Main Server

It seems the name of the param, local or main, is self generated. The
word 'main' and 'local' do not appear in the program.

What's the deal?