Adding sectioning support in scrlttr2 class

Question

It seems like by default the scrlttr2 class doesn't support sectioning, that is the command \section or \paragraph returns errors.

How can one add sectioning support to a latter basing on scrlttr2?

Answer 1

One solution is hinted in this answer. In particular, download the file sectionslco.zip and unzip it to the directory containing the letter. Finally, add the class option sections. Now you can use all sectioning macros, e.g. \section, as usual.