In notes:

radno
x1 is x2 radian(s) [metric unit] in angular measure (default is 1) by standard x3.
bernanjudri
j1 is the latitude/declination of j2 in system j3.
cacryra'o
x1 is x2 hours in angular measure of right ascension RA (default is 1).
sunsicyjudri
j1 is the longitude/right ascension of j2 in system j3