The merge feature is similar to functionality but merges hierarchical document structures.

The software enables users to assemble individual components into a document structure.

The first real Corel version was 5.0, released in 1994, and made fundamental changes to both user interface and document structure.

Editing: Sound parent-child relationships are enforced when the user modifies the document structure.

After organizing the whole document, the writer typically creates a final outline that shows the document structure.

Invalid document structure here means only the use of attributes and elements where they do not belong.

Keep formatting independent (uncoupled) from the document structure.

It does not provide an information model, record model or document structure.

The representation of document structures in data-base models is investigated more fully later.

This is satisfactory for small, simple document structures but otherwise there are a number of problems: