3.2 Skribilo User Manual — Spacing
By default, the spacing rules are the same as those of TeX/LaTeX, for instance: subsequent white spaces in the input text are coalesced into a single space in the output. Language-dependent spacing rules (e.g., for punctuation) are to be handled by the engine. This frees you from having to remember all the spacing details.
Additionally, the following markups allow you to produce explicit unbreakable and breakable space, respectively: