What is the Leipzig standard gloss for a polar question

[zaba]

Sure, there are many lists and I checked all of them... but none of them give an idea of how to gloss a polar question like this one:

be.good-POLAR 'Is it good?'
chicken be-3sg-POLAR 'Is it a chicken?'

[Daniel]

Isn't it just Q?

[zaba]

Isn't that ambiguous with other interrogative markers?

which 2POSS-patronymic be-INTERR 'what is your name?'
Kawul-ACC you be-POLAR 'are you Karol?'

[Daniel]

I'm not sure about that standard, but for a yes/no question I have often seen just Q (sometimes QM) used for the particle (as in a WH-question) because it is yes/no if there is no WH-item.