Updated version with help elements

Pinger.ps1

@@ -1,9 +1,28 @@
-
+<#
+    .SYNOPSIS
+    Pings a comma separated list of addresses for a certain time with a specified interval.
+    .DESCRIPTION
+     Pings a comma separated list of addresses for a specified time with a specified interval frequency.
+     The times are specified through the parameters -Delay and -Seconds are expressed in seconds.
+     If the parameter -Seconds is omitted or set to zero the script runs continuously.
+     .PARAMETER IpList
+     A comma separated list of hosts or IPs
+     .PARAMETER Delay
+     The interfal between Pings. It is expressed in seconds and if is not specified it defalts to 160 seconds
+    .PARAMETER Seconds
+     It detemines for how long the program runs. It is expressed in seconds and it is not specified, or set to zero, the program never terminates
+    .EXAMPLE
+     Pinger 10.0.0.1,10.0.0.2,10.0.0.10 -Delay 30 -Seconds 300
+    .NOTES
+      Author: Marco S. Zuppone - msz@msz.eu
+      Version: 0.1
+      License: AGPL 3.0 - Plese abide to the Aferro AGPL 3.0 license rules! It's free bug give credit to the authors :-) 
+#>
 param (
         [Parameter(Mandatory)]
         $AddrIPs,
-        $Delay=160,
-        $Seconds=0
+        [int]$Delay=160,
+        [int]$Seconds=0
 
 )
 Write-Host $Delay
@@ -29,6 +48,4 @@ Do {
     }    
 }
     until ($Exit)
-
-
-
+