[docs] NW_PRE_ARGS environment variable

rogerwang · rogerwang · commit 58813dadbdd8 · 2019-01-21T20:02:55.000-07:00
diff --git a/docs/References/Command Line Options.md b/docs/References/Command Line Options.md
@@ -72,3 +72,7 @@ These options are related to the transparent window feature. See [Transparent Wi
 You can also use Chromium options listed in https://github.com/nwjs/chromium.src/blob/nw18/chrome/common/chrome_switches.cc and https://github.com/nwjs/chromium.src/blob/nw18/content/public/common/content_switches.cc . See also http://peter.sh/experiments/chromium-command-line-switches/
 
 These options can be put into [`chromium-args` in manifest](Manifest Format.md#chromium-args) to get NW.js running with them each time.
+
+## Environment Variables
+
+`NW_PRE_ARGS`'s value is prepended to the value of `chromium-args` in manifest.
diff --git a/docs/References/Manifest Format.md b/docs/References/Manifest Format.md
@@ -118,6 +118,8 @@ Here's the basic syntax:
 
 It will be useful if you want to distribute the app with some custom chromium args. For example, if you want to disable the GPU accelerated video display, just add `"chromium-args" : "--disable-accelerated-video"`. If you want to add multiple arguments, separate each two arguments by space. This field can take a number of flags in one argument as well, via enclosing them in single quotation marks.
 
+The value of `NW_PRE_ARGS` environment variable is prepended to the value of this field.
+
 See [Command Line Options](Command Line Options.md) for more information.
 
 ### crash_report_url
