Quad name: Difference between revisions

|{{quote | "The quad <syntaxhighlight lang=apl inline>⎕</syntaxhighlight> can be used to define the geometries of the other APL characters, since all the APL characters can be described by their relationship to it. The quad character was originally chosen for the font so that it could be used around any of the other characters. In particular, it was chosen to be a size such that it fit around any of the alphabetic characters. For example, the top of the bottom line of the quad is the base line of the alphabetic and numeric characters, and the bottom of the top of the quad is their top. The geometric center of the quad is the center of many of the APL special symbols. In particular, function symbols are normally raised above the baseline of characters — this position is known as the "function center." It is interesting to note that the dimensions of the quad are the "golden section" which is a well-accepted esthetic criterion in art and design."|Joey K. Tuttle. ''APL pi — designing an APL type font'', 1981.}}