Welcome to diaforum.se

Note: You can't see the Vimeo videos in fullscreen at this website because the Vimeo code (the API)
for that breaks the rules for well formed XML and valid XHTML.

Wishing you all the Joy of the Season! Enjoy this seasonable video with trumpeter Wynton Marsalis and his daughter Oni Marsalis on vocals. On bass you see and hear Philip Norris, on piano Dan Nimmer, on tenor saxophone & clarinet Camille Thurman, and on drums Taurien “TJ” Reddick.

Thunder In The Night wrote about this film:
“Three day bikepacking trip with strangers who became friends through the shared experience of riding the Rallarvegen, the 100 year old Navvies' road used by the engineers to construct the mountainous section of the Bergen railway line in western Norway. We rode from Haugastøl to Myrdal, down to Flåm, back up to Myrdal, took the train through the tunnel to Upsete and rode down into Voss.

Read the full trip report at: thunderinthenight.blogspot.no/2012/08/crushing-gravel.html ”

Four well illustrated subjects are now up at this website

[This is Sandå, the bridge over Sandåi, Rallarvegen, 
the old Bergen Railway track, and Sandåvatnet at 1265 meters above sea level.]
© Photo Conny Andersson 2006

This photo shows the bridge for Rallarvegen over Sandåi at Sandå, and the old Bergen Railway track towards Slirå. To the left of Rallarvegen is the beautiful lengthmen's house. A lengthman was a person employed to maintain a section of the railway. The house was built in 1913, and the architect was H. Kass. The lengthmen and their families lived here 1913–1969, now it is a private house.

To the right of Rallarvegen is the navvies' cottage at Sandå, where the navvies lived when the Bergen Railway was built in 1895–1909. A navvy was a person employed to build the railway.

  1. Photos from Rallarvegen – the navvies' road – in Norway
  2. Larvae in massive attacks on bird cherry trees in 2006 and 2007
  3. Photos of the Andersson family from Långö 1942–1963
  4. Portland, Oregon, USA – a nice & progressive city
[Photo of larvae chewing on a leaf of a bird cherry tree.]
© Photo Conny Andersson 2007

A larva is an active immature form of an insect. The larvae shown in my photos are coming from the eggs of the Bird-cherry Ermine moth — Yponomeuta evonymella — (Linnaeus, 1758). In Swedish this moth is named häggspinnmal.

About me and diaforum.se

My name is Conny Andersson and I am the manager of this website. I am a Swede. The photo below shows me as a two year old child in 1952.

[Conny Andersson at work in 1952.]
© Photo Hugo Andersson 1952, digitized by Conny Andersson on May 15, 2010

What is the meaning of diaforum? Dia- is a prefix, and it comes from the Greek word dia. The meaning of dia is through something. The word forum comes from Latin, and the literal meaning is “what is out of doors, is an agora” — a public open space used for assemblies. The World Wide Web and the Internet are such public open spaces for assemblies.

This website's HTTP-server is located in Oslo

[Oslo and Karl Johans gate on August 2, 2006.]
© Photo Conny Andersson 2006

The Apache HTTP-server for this website is located in Norway, in Oslo near to the Akerselva river.

In Oslo you just have to pay a visit to The International Museum of Children's Art. See the world through the eyes of children!

About this website

As a rock solid platform for computing served the FreeBSD Operating System. That is a BSD (Berkeley Software Distribution - University of California, Berkeley) version of Unix.

I wrote the text, and the XML-markup with an extended version of the classic Unix vi Editor, the superb VIM Editor (Vi IMproved). I have used Unicode for character references. That adds an other step toward the strictness of XML. As a matter of fact all of the web pages at diaforum.se are well-formed and valid XML documents, hence the XML icon.

The Extensible Markup Language, XML 1.0 was first announced as a W3C (the World Wide Web Consortium) recommendation on February 10, 1998. The latest version of the XML 1.0 recommendation was announced on November 26, 2008 and last modified on February 7, 2013.

In XML there is no gap at all for faulty markup.

Restrictive proprietary data formats are not reliable to use for lasting documents, and secure exchange of information in computer networks.

This website is now ready to operate via the Internet Protocol version 6. IPv6 was standardized (RFC 8200) on July 14, 2017.

At the Internet Society I found a very strict tool to check if IPv6 is correctly configured: the nat64check. First it does a NAT64 check to see if it is correctly applied. It checks the Path MTU Discovery (PMTUD). At last it checks if the IPv6 works correctly as a stand-alone Internet Protocol (IPv6-only) at the actual website.

You may see my website's full-blown IPv6 readiness at nat64check.

Checkpoint W3C

[W3C tools for quality.]

Due to the Vimeo videos at the start of this web page I have to fall back to XHTML 1.0. The iframe tag is not allowed in XHTML 1.1 and the allowed object tag does not work in some browsers. And, you can't see the Vimeo videos in fullscreen at this website because the Vimeo code (the API) for that breaks the rules for well formed XML and valid XHTML.

Below you can run a parser to check for valid XHTML 1.0 at:

https://www.diaforum.se/ index.xhtml

And, check that: the Cascading Style Sheet is valid CSS Level 3

[Link to apache.org, because this website runs on an 
Open Source Apache http-server in Oslo, Norway.] [Check this website - diaforum.se is IPv6 ready! .]

[This web page is valid XHTML 1.0 .] [Valid CSS3! .]
Conny Andersson
Last modified: March 10 2019