[DAS] (ldas) How to setup reference data of load file for an annotation server?

[Richie Gan]

On Tue, 20 May 2003, Ewan Birney wrote:
> On Tue, 20 May 2003, Richie Gan wrote:
> > I want to setup an annotation server include some ESTs,exons and their
> > genomic position, I want to show annotation on ensembl web site(in contig
> > view), but i have no idea about how to setup [references] area (entry
> > points?) in load file. should I reference to entry points of map master?
> > or just setting it in my own way (chromosome,contig..etc..)?
> 
> You don't need to have any reference points if you just want to set up an
> annotation server (at least for working against the Ensembml DAS client
> system)
> 

I don't understand. If i don't have any reference point, how DAS client
know where annotations should be placed?  

Document on page http://www.biodas.org/servers/LDAS.html told me :
"1.reference point information: This type of information, which is needed
both for reference servers and annotation servers, lists the names and
lengths of all the landmarks that will be used to describe the positions
of annotations."