2 param - value of argument in a user-function call
13 The function param(n) can be used only within the body of the
14 definition of a function.
16 If that function is f()
18 [[ which may have been defined with named arguments as in f(x,y,z))
20 and either the number of arguments or the value of an argument
21 in an anticipated call to f() is to be used, the number of
22 arguments in that call will then be returned by:
26 and the value of the n-th argument by:
30 Note that unlike the argv() builtin, param(1) is the 1st parameter
31 and param(param(0) is the last.
36 >> for (n = 1; n <= param(0); n++)
41 > print f(), f(1), f(1,2), f(1,2,3)