Understanding SharePoint PageLayouts

Page Layouts and their associated File names:

(Article Page) with Body Only                      pagefromdoclayout.aspx
(Article Page) with Image                             Left articlesleft.aspx
(Article Page) with Image                             Right articlesright.aspx
(Article Page) with Summary                        Links articlelinks.aspx
(Redirect Page) Redirect Page                      redirectpagelayout.aspx
(Welcome Page) Advanced Search              advancedsearchlayout.aspx
(Welcome Page) Blank Webparts Page        blankwebpartpage.aspx
(Welcome Page) People Search Results Page peoplesearchresults.aspx
(Welcome Page) Search Page                      searchmain.aspx
(Welcome Page) Search Results Page          searchresults.aspx
(Welcome Page) Site Directory Home          tabviewpagelayout.aspx
(Welcome Page) Welcome Page with Table of Contents weclometoc.aspx
(Welcome Page) with Summary Links          welcomelinks.aspx
(Welcome Page) with Webpart Zones          welcomelayout.aspx
(Welcome Page) with Splash Page               welcomesplash.aspx