The transaction log can now be created and hold entries, but there is no way to add anything to the list. Typically, a list has the ability to add elements to either end—as long as there is a pointer to that end. If that was not the case, any operation would become computationally expensive, since every item has to be looked at to find its successor. With a pointer to the end (tail) of the list, this won't be the case for the append operation; however, to access a random index on the list, it would require some time to go through everything.
Naming is—especially if English is your second language—often tricky. Operations have different names by the language or library used. For example, common names for adding items to a list include push (can add to the front or back), push_back, add, insert (usually comes with a positional parameter), or append. On top of being able to guess method names, some imply completely different processes than others...
