The first time when we download AEM 6.3 jar and run java -jar aem-*.jar it takes a while to run the install and bring the server up. However the second time you run the same command again AEM knows that installation is already complete  and the server start is quick. The question I have is How does ...

Can we hide a template like components? I know in component we say componentGroup hidden. Is that possible in with a template? The reason I am asking is I have an abstract template that will not be used to create pages explicitly. Instead other templates will use it to extend.