Everything else is finally only details -- significant details, but variants on this theme. index.php is the control, the menu program determins what the "current page" is, and a lot of occasions get fired in the process of building that page. Plugin modules can hook in to those events and shift the workflow/provide additional info/etc. That is also part of the reason so many Drupal resources focus on making modules. Without modules, Drupal does not really DO something other than say, 'Some one asked for a page! Does this exist? No? OK, I will serve up a 404.'

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

http://billysrereebiz.com - lolz

Everything else is finally just details -- significant details, but variants on this theme. index.php is the controller, the menu system determins what the "present page" is, and a lot of events get fired in the process of construction that page. Plugin modules can hook into those events and shift the work flow/furnish additional info/etc. That is also part of the reason so many Drupal resources revolve around making modules. Without modules, Drupal does maybe not really DO anything other than say, 'Someone 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 variants on that theme. index.php is the control, the menu system determins what the "present page" is, and a lot of occasions get fired in the process of building that page. Plugin modules can hook in to those occasions and modify the work flow/furnish additional information/etc. That is also a part of the reason a lot of Drupal resources center on making modules. Without modules, Drupal does maybe not really DO something other than say, 'Somebody asked to get a page! Does this exist? No? OK, I will serve up a 404.'

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

http://billysrereebiz.com - lolz