Since up and down, above and below are relative and abstract
terms, man conveyed the ideas graphically by relating a simple stroke to a
horizontal foundation line
.
This stroke above the base line was originally a dot :
extended to a line :
propped upright :
embellished :
and finally stabilized :.
.
This stroke above the base line was originally a dot :
extended to a line :
propped upright :
embellished :
and finally stabilized :
.
