use global instead of system-wide specific on doc that global config file is shared by all python installation
@@ -380,17 +380,19 @@ variable ``PIP_CONFIG_FILE``.
:file:`C:\\Documents and Settings\\All Users\\Application Data\\pip\\pip.ini`
* On Windows 7 and later the file is hidden, but writeable at
:file:`C:\\ProgramData\\pip\\pip.ini`
-* System-wide configuration is not supported on Windows Vista
+* Global configuration is not supported on Windows Vista.
+
+The global configuration file is shared by whole Python installation.
If multiple configuration files are found by pip then they are combined in
the following order:
-1. The system-wide file is read
+1. The global file is read
2. The per-user file is read
3. The virtualenv-specific file is read
Each file read overrides any values read from previous files, so if the
-global timeout is specified in both the system-wide file and the per-user file
+global timeout is specified in both the global file and the per-user file
then the latter value will be used.
The names of the settings are derived from the long command line option, e.g.
