What is the primary browser of Windows 10?

Each time you save a document, you will need to type in the file type in which it should be saved you can select the save button to save it with the same file name if it has been previously saved you will need to select the location to save the file you will need to use the save as dialog box

Avirus enters a computer or network as code embedded in other software directly from another computer

How do i copy and paste equations and pictures like math graphs, to post on this site to get my questions answered?