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+====== Check Application Architecture ======
+**This document will show how to see what processor platform your Mac OSX Applications are built for.** This is most useful to see what programs will stop working when switching from 10.6 or lower to Mac OSX Lion, which no longer supports PowerPC code.
+===== How to Check =====
+  * Begin by clicking the **Apple Menu** then click **About This Mac**
+  * Next, as shown on the screenshot below, see what Processor your Mac is running.\\ {{:wiki:software:macintosh_systems:aboutthismac.png?|About This Mac}}
+    * Supported Processor Types for Lion (10.7):
+      * Intel Core 2 Duo
+      * Intel Xeon
+      * Intel Core "i" series (i5, i3, i7)
+      * Anything purchased in 2008 or newer
+    * Processor Types NOT supported by Lion (10.7)
+      * PowerPC
+      * Intel Core Duo
+      * Intel Core Solo
+  * If you are running a supported processor, click **More Info** then click **Applications** on the left\\ {{:wiki:software:macintosh_systems:applist.png?650|Applications}}
+  * Sort the list by **Kind** by clicking that column header then look for anything with a **Kind** of **PowerPC**.  Anything listed will need to require your intervention or it will not work under Mac OSX Lion.
+===== PowerPC Applications =====
+Any applications found via the steps above that are running as PowerPC will need to be upgraded or replaced with similar applications.  Lion removes Rosetta, a PowerPC emulation application so all the old PowerPC code stops functioning.
+You will need to either check for updates for your PowerPC applications, contact the manufacturer to see if they have a newer version or find a similar application to replace the out-dated one.