What is this strange symbol in Microsoft Word and how can I use it?
It marks the end of the text in a table cell (all characters in above picture are the same).
Positioning your cursor to the left of them after the table enables you to insert new row / column in the table (right-click - insert; or simply press Enter).
You can't delete / insert them, but you can hide by pressing "show/hide" in home tab - paragraph group; or with the keyboard shortcut CTRL+(.
i think it part of show/hide invisible characters (space, breaks etc)
find this in the home ribbon and click that
