Update README.md

README.md

@@ -11,20 +11,25 @@ For the best visual effect, please make sure the scale of your PC is 100% or 200
 If you meet crashes, try run with **HotShift & AsAdmin**. More settings' details see
 [information](info.md).
 
+If you want to go back to previous settings, check [this commit](https://github.com/hyrious/Mactype.Profile/commit/ab6b8d7112d354b97a1512ae51fdf018ee6ebd03).
+
 ## Install
 
-1. Install Fonts: XHei OSX [BaiduPan](https://pan.baidu.com/s/1ge6WEPl) | [GoogleDrive](https://drive.google.com/open?id=0By0qP7O6AIsHSTMwUi1iUjY4dkk)
+1. (optional) Install Fonts<sup>1</sup>: XHei OSX [BaiduPan](https://pan.baidu.com/s/1ge6WEPl) | [GoogleDrive](https://drive.google.com/open?id=0By0qP7O6AIsHSTMwUi1iUjY4dkk)
 2. Install [Mactype](http://www.mactype.net/).
 3. Download [the latest release](https://github.com/hyrious/Mactype.Profile.Mac/archive/master.zip), extract it to Mactype's ini folder.  
    e.g. `C:\Program Files\MacType\ini`
-4. Run `MacWiz` ( `Mactype 用户向导` in Chinese ) from Start Menu, choose this profile marked hyrious then <kbd>OK</kbd>.
+4. Run _MacWiz_ ( _Mactype 用户向导_ in Chinese ) from Start Menu, choose this profile marked hyrious then <kbd>OK</kbd>.
+
+<sup>1</sup> `FontSubstitute=1` then uncomment all lines under `[FontSubstitutes]` to take effect.
 
 ## Information
 
 Inspired by 3 profiles:  
 - LCD.W7.默认字体.仿Mac.ini (at `<Mactype>/ini/`, default INIs)
 - OSX.ini (at `<Mactype>/ini/IoF/HotShift/HotShift→XHei…`, default INIs)
 - [Mactype.Decency](https://github.com/renkun-ken/MacType.Decency)
+- Default.ini
 
 ## Recommended Applications