Initial data commit

Task/Variadic-function/REXX/variadic-function-1.rexx

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+print_all:  procedure              /*   [↓]     is the # of args passed.*/
+                           do j=1  for arg()
+                           say  arg(j)
+                           end   /*j*/
+return

Task/Variadic-function/REXX/variadic-function-2.rexx

@@ -0,0 +1,5 @@
+print_all:  procedure              /*   [↓]     is the # of args passed.*/
+                           do j=1  for arg()
+                           say  '[argument'   j"]: "   arg(j)
+                           end   /*j*/
+return

Task/Variadic-function/REXX/variadic-function-3.rexx

@@ -0,0 +1,10 @@
+call print_all .1,5,2,4,-3, 4.7e1, 013.000 ,, 8**2 -3, sign(-66), abs(-71.00), 8 || 9, 'seven numbers are prime, 8th is null'
+
+call print_all  "One ringy-dingy,",
+                "two ringy-dingy,",
+                "three ringy-dingy...",
+                "Hello?  This is Ma Bell.",
+                "Have you been misusing your instrument?",
+                "(Lily Tomlin routine)"
+
+                         /*  [↑]   example showing multi-line arguments.*/

Task/Variadic-function/REXX/variadic-function-4.rexx

@@ -0,0 +1,13 @@
+/* REXX */
+list=''
+Do i=1 To 6
+  list=list||'"arg"'i','
+  End
+list=list||'"end"'
+Interpret 'call show' list
+Exit
+show:  procedure
+do j=1 for arg()
+  say  arg(j)
+  end   /*j*/
+return