In December 2016 I was invited by Ernst to temporally replace Claire Gormley. The first task was to transfer the action's web site to

http://costnet.webhosting.rug.nl

To reduce my future workload I transformed it in a form supported by a wiki

http://costnet.webhosting.rug.nl/dokuwiki

The original WWW offered its content to users to read. Around 2000 the Web 2.0 emerged providing services that allowed to users also to contribute/write web content (YouTube, Facebook, etc.). For example pages for this meeting.

Wikis are services that support a collaboration in creating web sites:

• editing hypertext (notes, syntax)
• hierarchical structure of pages
• uploading/downloading files (Data); zip the file if its format is not admissible for upload
• access control:
  • actions: None, Read, Edit, Create, Upload, Delete
  • types of users: user, member, org, power, admin
  • internal
• versions system