generates the note about future tense, which depends on the aspect of the verb
Possible values:
"imperfective" (or alternatively "imperfect", "impf", "imp" or "i") – this is the default value, so it is not necessary to fill
"perfective" (or alternatively "perfect", "pf" or "p")
"pf-impf" (or alternatively "p-i" or "pi") – for verbs which can have both aspects
pass
It can prevent passive to be shown
The value "no" causes that no passives are filled if the verb does not have passive forms
pass ns
passive neutral singular
The value "yes" enables to show passive neutral singular form of the verb in cases when the verb does not form other passive voice forms, which are disabled by the parameter "pass".
tr past2
alternative past transgressive
Some verbs have two forms of past transgressives, such as zapomenout.