If it's on a house post, I'm sure it's signifying that Yoruba will offer hospitality
Negative space enclosed by letterforms is called counters.
Negative space is white space that letters such as O or D have (enclosed white space within the letter). Well, in typography, that white/negative space is called a counter, or aperture, or inner space, or enclosed space.
Answer:
It continued a convention of medieval artworks, which was to communicate religious ideas.
Explanation:
This altarpiece allowed the pilgrims to respect Saint Antun. These opened inner wings represent the Saint Antun, the place of honour at the centre of the corpus and at his side a pig is portrayed.
