what is insert?

Are you referring to the Insert key? If so, here's what happens when you press it: Whatever you type will wipe out whatever is already typed if you are entering text in the middle of a sentence or paragraph.

I try to leave it off. It's more of a hassle than making my additions and then deleting what I don't want.

=)

Actually, "insert" is a term used in computer programming and database management. It refers to the action of adding a new record or data entry into an existing table or database.

In programming, the "insert" keyword or function is used to store new data values into a variable, list, or data structure. For example, in Python, you can use the "insert" method to add an element at a specific position in a list.

To perform an insert operation in a database management system, you typically use SQL (Structured Query Language) statements, specifically the INSERT INTO statement. This statement allows you to specify the table where you want to insert data and the values to be inserted into each column of that table.

Overall, "insert" is a common term used when referring to adding or inserting new data into a program or a database.