Collect and organize the master page master placeholder of SharePoint on the Internet (not changed)

Because we need to redesign the style and rewrite the master page, we collected some

Placeholder name		Description
Placeholderadditionalpagehead		Additional content to be written in the
Placeholderbodyareaclass		Style appended to the body at the top of the page
Placeholderbodyleftborder		Border element of the page body
Placeholderbodyrightmargin		Right margin of the page body
Placeholdercalendarnavigator		A date selection box is displayed for a calendar in the page.
Placeholderformdigest		This is a required "form Digest" security component on the page.
Placeholderglobalnavigation		Site Navigation
Placeholderglobalnavigationsitemap		Site Map
Placeholderhorizontalnav		Horizontal navigation label
Placeholderleftactions		Action Area under the left navigation area
Placeholderleftnavbar		Left Navigation
Placeholderleftnavbarborder		Border element in the left navigation area
Placeholderleftnavbardatasource		Data Source in the navigation bar on the left
Placeholderleftnavbartop		Navigation area on the left navigation area
Placeholdermain		Page subject
Placeholderminiconsole		A place where page-level commands are placed, such as Edit page, history, and incoming links on the wiki site.
Placeholdersitename		Site name
Placeholdernavspacer		Width of the left navigation area
Placeholderpagedescription		Page Description Area
Placeholderpageimage		Icon on the left of the page
Placeholderpagetitle		<Title> of the page, usually displayed in the title bar of the browser
Placeholdersearcharea		Search box
Placeholdersitename		Site name
Placeholdertitleareaclass		Style appended to titlearea
Placeholdertitleareaseparator		Titleareaseparator Area
Placeholdertitlebreadcrumb		Titlebreadcrumb page navigation area
Placeholdertitleintitlearea		Title under breadcrumb
Placeholdertitleleftborder		Border on the left of the title Area
Placeholdertitlerightmargin		White space on the right of the title Area
Placeholdertopnavbar		Tag navigation area
Placeholderutilitycontent		A special piece of content required at the bottom of the page
Spnavigation		Windows SharePoint Services is empty by default. It is used for additional page editing controls.
Wssdesignconsole		Page editing control, used when the page enters the editing page mode (after clicking site actions and Edit page)