What is meaning of parameter in URL Google Maps

Question

I'm doing with Webkit Browser on Android. I want get a sign red "A" in URL following:

https://maps.google.com/maps?f=q&source=s_q&hl=vi&geocode=&q=7+Nguy%E1%BB%85n+Ch%C3%AD+Thanh,+T%C3%A2n+Th%E1%BA%A1nh,+Tam+K%E1%BB%B3,+Qu%E1%BA%A3ng+Nam,+Vi%E1%BB%87t+Nam&aq=0&oq=7+Nguy%E1%BB%85n+Ch%C3%AD+Thanh,+T%C3%A2n+Th%E1%BA%A1nh,+Tam+K%E1%BB%B3&sll=15.579176,108.470603&sspn=0.001573,0.002411&vpsrc=6&ie=UTF8&hq=&hnear=7+Nguy%E1%BB%85n+Ch%C3%AD+Thanh,+Tam+K%E1%BB%B3,+Qu%E1%BA%A3ng+Nam,+Vi%E1%BB%87t+Nam&ll=15.578003,108.471826&spn=0.006294,0.009645&t=m&z=17&ei=mwSGUKXwOK2tiQeHlYH4Ag&pw=2

<script type="text/javascript">
    function initialize() {
        var latlng = new google.maps.LatLng(15.578003,108.471826);
        var myOptions = { 
            zoom:15, 
            center:latlng , 
            mapTypeId: google.maps.MapTypeId.ROADMAP
        };
    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    }
</script>

How to i get a sign red "A" and a set in file HTML:

Show picture: http://i.stack.imgur.com/STyUG.jpg

And what is meaning of parameter in URL Google Maps ??? Example :

f=q;
source=s_q;
hl=vi;
geocode;
aq=0;
oq=7+Nguy%E1%BB%85n+Ch%C3%AD+Thanh,+T%C3%A2n+Th%E1%BA%A1nh,+Tam+K%E1%BB%B3;
sll=15.579176,108.470603;
sspn=0.001573,0.002411;
vpsrc=6;
ie=UTF8;
hnear=7+Nguy%E1%BB%85n+Ch%C3%AD+Thanh,+Tam+K%E1%BB%B3,+Qu%E1%BA%A3ng+Nam,+Vi%E1%BB%87t+Nam; ll=15.578003,108.471826;
spn=0.006294,0.009645;
t=m;
z=17;
ei=mwSGUKXwOK2tiQeHlYH4Ag;
pw=2

My english is not good, and expect people to sympathize..

Answer 1

Parameter Description

f=q The f parameter, which controls the display of the Google Maps form, can be d (for the directions form or l for the local form). Without the f parameter, the default search form is displayed.

hl=en Google Maps supports a limited number of host languages, including en for English and fr for French.

q=1600+Pennsylvania+Ave,+Washington,+DC The value of the q parameter is treated as though it were entered via the query box at http://maps.google.com.

sll=36.60585,-121.858956 sll contains the latitude and longitude for the center point around which a business search is performed.

spn=0.006313,0.01133 spn is the approximate latitude/longitude span for the map.

ie=UTF8 ie is the character encoding for the map.

om=1 om determines whether to include an overview map. With om=0 the overview map is closed.

iwloc=addr iwloc controls display options for the info window.

A good way to get a feel for how these parameters function is to change a parameter, add new ones, or drop ones in the sample URL and take a look at the resulting map. For instance, if you have only the q parameter, you would still get a map with some default behavior:

http://maps.google.com/maps?q=1600+Pennsylvania+Ave,+Washington,+DC

That is, the other parameters are not mandatory. Let’s play with the z parameter to adjust the zoom factor:

http://maps.google.com/maps?q=1600+Pennsylvania+Ave,+Washington,+DC&z=0

versus the following:

http://maps.google.com/maps?q=1600+Pennsylvania+Ave,+Washington,+DC&z=17

There is a comprehensive list of Google Maps parameters

• mrad lets you specify an additional destination address.
• output=kml gets a KML file to send to Google Earth.
• layer=t adds the traffic layer.

• mrt=kmlkmz shows “user-created content.” For example, the following shows user-­generated information about hotels around the White House:

  http://maps.google.com/maps?f=q&hl=en&q=hotel&near=1600+Pennsylvania+Ave,+Washington,+DC&sll=36.60585,-121.858956&sspn=0.006313,0.01133&ie=UTF8&z=16&om=1&iwloc=addr&mrt=kmlkmz