I know you can make an application run in the background by opening the package and finding info.plist then editing the line below <key>NSUIElement</key> from <string>0</string> to <string>1</string>. But what about those apps that won't let you show package contents? Like the ones that you right click on and they just don't give you that option? What makes an app not give that option (is it because its carbon!?!?) and is there any way to make it run in the background? I have some apps that do nothing but run in the background, but they were not written too well and as a result waste space in my dock (hence why this is in gui customization)