What is downstroke letter?

A downstroke letter refers to the part of a letter that is formed by a downward movement when writing or drawing. In typography, downstrokes are often thicker or more pronounced than upstrokes, contributing to the overall character of the letter. This concept is particularly relevant in calligraphy and certain fonts, where the contrast between downstrokes and upstrokes enhances visual appeal and readability. Examples of downstroke letters include those with vertical or diagonal lines, such as "b," "d," or "k."