Documentation for Confluence 5.7.
Documentation for Confluence Cloud and earlier versions of Confluence is available too.

Title: Working with Anchors  
Author: Vidya Madabushi Aug 08, 2005
Last Changed by: Rachel Robins [Atlassian Technical Writer] Jan 27, 2015
Tiny Link: (useful for email) https://confluence.atlassian.com/x/siAC
Export As: Word  
Incoming Links
Confluence Latest (3)
    Page: Working with Links
    Page: Essential Confluence Features for Technical Documentation
    Page: Anchor Macro
Hierarchy
Parent Page
    Page: Pages and Blogs
Labels
Global Labels (4)
Outgoing Links
Confluence Latest (5)     Page: Table of Contents Macro
    Page: Working with Links
    Page: _Details_about_macro_parameters
    Page: Working with Anchors
    Page: Anchor Macro