Table slot usage of Table components in Element-UI

problem description

when looking at the table component document of Element UI, I found this usage:
Table Slot
because there is no description in the document, so I would like to know how to use the following?

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Jun.21,2021

official note: this slot may be used if the contents of the table are inserted after the last row of the table, if you need to scroll the contents of the table indefinitely. If the table has a total row, the slot will be above the total row.
for example: personal understanding
https://jsfiddle.net/7csptr3w/5/


< el-table >

<el-table-column
    type="index"
    :index="1"
    label=''
    width='100'>
</el-table-column>
<div slot="append" style="text-align: center">
    <!---->
    
</div>

< / el-table >


slots in vue, do you understand? if you don't understand, ide/components-slots.html-sharpad" rel=" nofollow noreferrer "> link

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e59968-44897.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e59968-44897.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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