Completed FORTH command line arg printing and added comments

to document example better.

forth/hello.fs

@@ -3,15 +3,31 @@
 \  Sample Hello World! Forth script...
 \
 
+\ Define "verinfo"
 : verinfo s" git describe --abbrev=7 --dirty --always --tags" system ;
 
+\ Define "printargs"
+: printargs
+	\ The argc variable contains the count of cmd line args 
+	\ in gforth, so we put it's value (@) on the stack plus
+	\ the number one and test if the value is greater than one.
+        argc @ 1 > if
+		\ condition is true, so put the value of argc (@)
+		\ on the stack and the value one as the range of
+		\ our do loop - we don't pring arg 0 which is the
+		\ name of the program.
+        	argc @ 1 do i arg type space loop cr
+	else
+		\ condition is false, so don't print anything
+		cr
+	then ;
+
+
 \ Obligatory Hello World with some version info
 .( Hello Forth World!  Version: ) verinfo cr
 
+
 \ Show list of command line arguments
-: printargs
-	argc @ 0 do i arg type cr loop ;
-.( Command line args: ) cr
-printargs
+.( Command line args: ) printargs
 
 bye