What means what?

the used symbols

For selecting a promising link quickly, most pages show content indicators in the form of gauges that indicate the "content value" of a linked site. This "content value" is a global appreciation (based on individual impressions) of the mix of that site's content level, content quantity, content quality, content relevance and content usability. This should not be considered an absolute measurement, but rather as an intuitive grade relative to the content value of other sites within the same category. Examples:

	Relatively low content value. A standard site showing an organisation, the staff, a list of publications and recent press-releases, but with no further historical content.
	Medium content value. Like an informative but unannotated text. Or a standard site that includes abstracts.
	Relatively high content value. Standard site including original historical documents, long-run on-line statistics or full text scientific papers and reports.
	"Content value" somehow not applicable. Like a site that is in a language too foreign for us to read what it says.
For obvious reasons, these "gauges" don't apply to some categories where the content either may be very fluid, or fixed in a self-evident way. Such links are indicated by different icons:
	Newsgroup or email discussion list.
	Primary source (a document from the past).
	Book review.
	Online bibliography.
	A collection of links.
	Statistical sources
	Photos and illustrations

Our special thanks go out to Prof. Dr. H. van Setten, Nijmegen University, for his help and support. Please visit his History of Education Site