The collected information is kept on a separate git server. Please consult

https://github.uio.no/compilerconstruction-inf5110/compila

It contains many things, among other documentation for

• language spec "compila 24"
• description of the oblig.
• slides from the lecture which presented the oblig, at least oblig 1

All that under the subdirectory doc.

The directory contains not just (or not even mainly) documentation, it  contains more (described in the documentation and also the top-level Readme). In particular it is the starting point for the code of your compiler project.

For ease of access, the HTML version of the language specification is copied in also into into the subdirectory languagespec here.