Need help understanding CF code

Hi all, I am not a CF programmer, but inherited a bunch of files from someone who left. I’m trying to understand the code in this fragment.

Thanks for your help, Scott


    <cfset StartRow = 1>
    <cfset Filepath =     "\\UserData\\Attachments\\">
    <cfset PopUserName = "MailboxName">
    <cfset PopPassword =  trim('Password')>
    
    <cfset HaveMsg = 0>

    <cftry>
        <cfpop action="getall" 
            name="GetMail" attachmentpath="\\\\ServerName\\e$\\DataFolder\\" 
            startrow="1" maxrows="100" 
            server="mail.example.org" 
            username="#PopUserName#" 
            password="#PopPassword#" generateuniquefilenames="yes">
        
        <cfcatch type="Any">
            <cfif not isdefined("SilentPop")>
                <hr />
                1. Unable to Connect to Mail Server<br />
                2. #cfcatch.message#<br />
                3. #cfcatch.detail#
                <hr />
                <cfdump var="#cfcatch.tagcontext#">
            </cfif>
            <cfabort>
        </cfcatch>
    </cftry>

    <cfloop query="GetMail">
         <cfpop action="delete" 
            messagenumber="1"  
            server="mail.example.org" 
            username="#PopUserName#" 
            password="#PopPassword#">
    </cfloop>

    <cfif not isdefined("SilentPop")>
        Emails to Process: #GetMail.recordcount#<br />
    </cfif>