Initial data commit

Task/Singly-linked-list-Element-insertion/OoRexx/singly-linked-list-element-insertion.rexx

@@ -0,0 +1,19 @@
+list = .list~new
+index = list~insert("abc")   -- insert a first item, keeping the index
+Call show
+list~insert("def")           -- adds to the end
+Call show
+list~insert("123", .nil)     -- adds to the begining
+Call show
+list~insert("456", index)    -- inserts between "abc" and "def"
+Call show
+list~remove(index)           -- removes "abc"
+Call show
+exit
+show:
+s=''
+Do x over list
+  s=s x
+  end
+say s
+Return