21.4.2 String construction with known type

The variable lw:*default-character-element-type* merely provides the default behavior. If enough information is supplied, then a string of suitable type is constructed. For instance, the form:

(make-string 3 :initial-element #\Ideographic-Space)

constructs a string of a type that can hold its elements, regardless of the value of lw:*default-character-element-type* .

LispWorks User Guide - 21 Jul 2006