Everything else is finally merely details -- important details, but variants on this theme. index.php is the control, the menu program determins what the "present page" is, and plenty of occasions get fired along the way of building that page. Plugin modules can hook into those events and adjust the work flow/supply additional advice/etc. That is also part of the reason a lot of Drupal resources revolve around making modules. Without modules, Drupal does not actually DO anything other than say, 'Some one asked to get a page! Does it exist? No? OK, I will serve up a 404.'

<a href="http://billysrereebiz.com">Corro</a>

http://billysrereebiz.com - lolz

Everything else is ultimately only details -- important details, but variants on that theme. index.php is the control, the menu method determins what the "present page" is, and tons of events get fired in the process of building that page. Plugin modules can hook in to those events and shift the workflow/furnish additional info/etc. That is also part of the reason a lot of Drupal resources concentrate on making modules. Without modules, Drupal does not really DO something other than say, 'Some one asked to get a page! Does it exist? No? OK, I'll serve up a 404.'

<a href="http://billysrereebiz.com">Corro</a>

http://billysrereebiz.com - lolz

Everything else is finally just details -- important details, but variations on this theme. index.php is the control, the menu system determins what the "current page" is, and plenty of occasions get fired in the process of construction that page. Plugin modules can hook in to those events and change the workflow/furnish additional info/etc. That is also a part of the reason so many Drupal resources focus on making modules. Without modules, Drupal does maybe not really DO anything other than say, 'Some one asked to get a page! Does it exist? No? OK, I will serve up a 404.'

<a href="http://billysrereebiz.com">Corro</a>

http://billysrereebiz.com - lolz