Updated profiles topic with details of default profiles

Author: cxharris

docs/pages/cdp/cdp-zowe-profiles.md

@@ -37,6 +37,8 @@ This is a much more economical and concise command-line than if were it necessar
 
 As suggested above, to deploy a Node.js application from your workstation to one or more CICS regions, you will need to set up a minimum of three Zowe CLI profiles (optionally more if you wish to, say, deploy to multiple hosts) - you can read how to do it in detail [here](cdp-Create-Zowe-CLI-profiles).
 
+{% include tip.html content="For each profile type, the first profile you create becomes the default for that type. In many cases, you don't even have to type in the name of a specific profile if you know that the default profile will serve your needs." %}
+
 Ultimately, you are not *required* to use Zowe CLI profiles - you can specify all of the required command-line arguments explicitly - but they reduce the burden of typing when you are issuing commands that require many arguments.
 
 ### Where are Zowe CLI profiles stored?