call 'routine_1.gp' 1 pi "title"
The three arguments are available inside routine_1.gp as follows
ARG1 = "1" ARGV[1] = 1.0 ARG2 = "3.14159" ARGV[2] = 3.14159265358979... ARG3 = "title" ARGV[3] = "title"
In this example ARGV[1] and ARGV[2] have the full precision of a floating point
variable. ARG2 lost precision in being stored as a string using format "%g".