(info.info) Tags

 
 Tag Tables for Info Files
 =========================
 
    You can speed up the access to nodes of a large Info file by giving
 it a tag table.  Unlike the tag table for a program, the tag table for
 an Info file lives inside the file itself and is used automatically
 whenever Info reads in the file.
 
    To make a tag table, go to a node in the file using Emacs Info mode
 and type `M-x Info-tagify'.  Then you must use `C-x C-s' to save the
 file.
 
    Once the Info file has a tag table, you must make certain it is up
 to date.  If, as a result of deletion of text, any node moves back more
 than a thousand characters in the file from the position recorded in
 the tag table, Info will no longer be able to find that node.  To
 update the tag table, use the `Info-tagify' command again.
 
    An Info file tag table appears at the end of the file and looks like
 this:
 
      ^_
      Tag Table:
      File: info, Node: Cross-refs^?21419
      File: info,  Node: Tags^?22145
      ^_
      End Tag Table
 
 Note that it contains one line per node, and this line contains the
 beginning of the node's header (ending just after the node name), a
 Delete character, and the character position in the file of the
 beginning of the node.

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(info.info) Cross-refs

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