After installation (see below), the viewer may be accessed in any of the following ways:
Execute menu Window -> Show View -> Other... and select entry GFM Support -> GFM Viewer. Then, when files with an extension of .md are saved from an Eclipse editor, this view is updated as would be seen when browsing the file via the GitHub website.
When a markdown file is selected in any tree navigation view, then a Show in GFM view context menu entry is provided which when activated will automatically open the view and display the formatted markdown content.
When one or more directories and/or markdown files are selected in any tree navigation view, then a Generate Markdown Preview context menu entry is presented which when activated will regenerate all associated markdown preview files (via background jobs recursively traversing the directory trees): this is effectively a batch mode update facility.
The GFM plugin view provides on its toolbar the following icons which may be clicked:
The GFM View-editor linked state is by default on, but if set off its state will be automatically saved and preserved in the Eclipse workspace provided the GFM view is not closed.
If non-ASCII characters are used in the markdown file, the current implementation assumes UTF-8 character encoding, see also here.
The plugin uses Eclipse default browser, e.g. Internet Explorer on Windows; if you use Linux, you will need to set up Mozilla Firefox as follows: