Input method:

Method 1:

1. Click to insert----symbol----other symbols;

2. The Symbol dialog box pops up, select the Special Characters tab, and click Register as shown in the figure.

Method 2:

Press the shortcut key: Ctrl+Alt+R to insert.

Method 3: Take the Sogou Pinyin input method as an example

1. In the Sogou Pinyin input state, enter: shangbiao, the input method status bar displays:

2 , select 5.