size(8cm,0);
import geometry;

/*<asyxml><view file="modules/geometry.asy" type="" signature="struct coordsys"/></asyxml>*/
show(currentcoordsys);

pair a=(0,0.5), b=(1,0.5);
/*<asyxml><view file="modules/geometry.asy" type="" signature="struct point"/></asyxml>*/
point A=a, B=b;

dot("$A$",A);
dot("$B$",B);