Doc changes

doc/source/netscript/basicfunctions/tail.rst

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+tail() Netscript Function
+===============================
+
+.. js:function:: tail([script, hostname[, numThreads=1[, args...]]])
+
+    :RAM cost: 0 GB
+
+    :param string script: Filename of the script of which to open the logs.
+    :param string hostname: Hostname of the server on which the script is running on. 
+    :param args...: Arguments to identify which script's log to open.
+
+    Opens a script’s logs. This is functionally the same as the tail Terminal command.
+
+    If the function is called with no arguments, it will open the current script’s logs.
+
+    Examples:
+
+    .. code-block:: javascript
+
+            ns.tail("foo.js", "foodnstuff");
+            ns.tail();
+
+.. js:function:: tail(scriptPid)
+
+    :RAM cost: 0 GB
+    :param number scriptPid: PID of the script of which to open the logs.
+
+    Same as the above version but with pid.
+
+    Example:
+
+    .. code-block:: javascript
+
+            ns.tail(12);