Various QOL improvements and bug fixes

doc/source/netscript/netscriptfunctions.rst

@@ -1211,6 +1211,26 @@ vsprintf
 
     See `this link <https://github.com/alexei/sprintf.js>`_ for details.
 
+nFormat
+^^^^^^^
+
+.. js:function:: nFormat(n, format)
+
+    :param number n: Number to format
+    :param string format: Formatter
+
+    Converts a number into a string with the specified formatter. This uses the
+    `numeraljs <http://numeraljs.com/>`_ library, so the formatters must be compatible
+    with that.
+
+    This is the same function that the game itself uses to display numbers.
+
+    Examples::
+
+        nFormat(1.23e9, "$0.000a"); // Returns "$1.230b"
+        nFormat(12345.678, "0,0");  // Returns "12,346"
+        nFormat(0.84, "0.0%");      // Returns "84.0%
+
 prompt
 ^^^^^^