StringRegExpReplace - What does this mean?

[computergroove]

I have the following code that I received help on in the forums. I don't know what this piece of code means:

StringRegExpReplace($chars, "(?m:^)(?i)(<url.+/pos)(</url>)", "$1login.php?key=" & $CustomerID & "_" & $CustomerPin & "$2")

This is what it is pulling from:

<?xml version='1.0' encoding='UTF-8'?>
<ti:app xmlns:ti='http://ti.appcelerator.org'>
<!-- These values are edited/maintained by Titanium Developer -->
<id>mac.merchant.v2</id>
<name>MyAreaCard - Merchant V2</name>
<version>1.0</version>
<publisher>MyAreaCard</publisher>
<url>http://www.myareacard.com</url>
<icon>icon.png</icon>
<copyright>2010 by MyAreaCard</copyright>
<!-- Window Definition - these values can be edited -->
<window>
<id>initial</id>
<title>MyAreaCard - Merchant V2</title>
<url>http://www.myareacard.com/merchant/pos</url>                         <!-- This line -->
<width>620</width>
<max-width>3000</max-width>
<min-width>0</min-width>
<height>500</height>
<max-height>3000</max-height>
<min-height>0</min-height>
<fullscreen>false</fullscreen>
<resizable>true</resizable>
<chrome scrollbars="true">true</chrome>
<maximizable>true</maximizable>
<minimizable>true</minimizable>
<closeable>true</closeable>
</window>
</ti:app>

What does "(?m:^)(?i)(<url.+/pos)(</url>)", translate to in English? Where can I find the reference?

[GEOSoft]

Go back to the original thread. I explained it to you there.

To make it even easier here is the link to my reply

Edited February 1, 2011 by GEOSoft

[computergroove]

Oops sorry. I checked the day after I posted it and I figured it was abandoned. Thanks

[GEOSoft]

A day after for you is probably after I'm asleep. I suspect we are half way around the world from each other.