"aste" refers to the strokes or lines that make up letters, and their "direzione" (direction) is analyzed for various traits, such as personality insights or to verify the authenticity of a signature.

The additional context provided describes the strokes as "polimorfe" (polymorphic), indicating variability in their shapes. It mentions "aste concave, con tendenza al raddrizzamento ed inanellamenti agli apici (basale e apicale)" which translates to "concave strokes, with a tendency to straighten and looping at the tips (basal and apical)."

It provides specific details on the strokes' appearance and behavior, suggesting a mixture of curvature and straightening in the strokes, with loops observed at both the beginning (basal) and end (apical) points of the strokes.