This module is used for all Ukrainian and Belarusian headword-line templates. It provides a basic functionality common to all of them, but some of the templates have specific additional functionality to show genders or inflected forms.
All Ukrainian and Belarusian headword-line templates use the first parameter to provide the headword, with accented vowels where present. For example:
{{uk-noun|соба́ка|m-anml}}
The parameter supports all the special features that the |head= parameter on {{head}} does. So you can also use this parameter to link to individual words of a multi-word term. These words can be linked with accents still in place; the module will remove them from the page name before creating a link, just like {{l}} does. If you need to specify accents in multiple alternative ways, use |head2=, |head3= and so on.
All Ukrainian and Belarusian words that have more than one syllable are expected to have accents specified. The module will check the parameter for the presence of accents, and (in the case of Ukrainian) throw an error if the accents are missing. If you really don't know the stress position, use |unknown_stress=1 to signal this. In this case, words without accents will be placed in a subcategory of Category:Requests for accents in Ukrainian entries or Category:Requests for accents in Belarusian entries.