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The various levels of heading in the databases in the
Digitale Bibliothek Deutscher Klassiker are represented
in the Table of Contents by branches, which can be expanded or collapsed.
Navigation within the Table of Contents is by means of the icons 
and 
which indicate whether you can expand or collapse a branch to change the
level of detail displayed.
- To expand a branch of the Table of Contents and view
the next level of heading, click the icon next to the branch. For example,
clicking
next to a volume title will expand the branch and display the groups
of documents within that volume; clicking
next to one of these groups will expand the branch further to display
individual documents or sub-groups.
- When you expand a level of the hierarchy, the
will be replaced with a .
To collapse an expanded branch and return to the higher
level of information, click .
All branches below that level will be collapsed.
If, having executed a search, you access the Table of Contents using the Context in Volume link in the Full Text, then branches of the Table of Contents will be marked where relevant with the number of hits (i.e. the number of times the current (or last) search term or expression occurs in the text) covered by that branch. Each time the Table of Contents is expanded, the number of hits listed next to each branch will be recalculated to display the number of hits covered by each level as it is opened.