a column or row to be resized
A double headed arrow will display when the mouse cursor is pointed over a window or an object that can be resized. This is usually the edge or corner of a window. The arrow can be vertical or horizontal and is used to drag the object to increase or decrease its size.
The computer mouse is used to move the cursor or arrow on the computer monitor. The mouse is operated by hand, usually with a mouse pad underneath it.
An arrow is a graphical symbol used to point or indicate direction.
The little arrow that you move around with the mouse is called a cursor.
The arrow that is used to indicate a reverse or backward reaction in a chemical equation is called a double-headed arrow.
They are arrow points and double arrow points
The computer mouse is used to move the cursor or arrow on the computer monitor. The mouse is operated by hand, usually with a mouse pad underneath it.
A single click on an Apple Macintosh computer consists of one up and down motion on a mouse. A double-click would consist of two consecutive single clicks with no or very little time between the clicks. (It is important to note that the speed of the "double-click" can be adjusted as long as a mouse is connected to the computer.) Also, usually, a single click selects an object or icon. A double-click usually opens or launches an application or document. (This is the case when your computer is in the "Finder." You can tell you are in the "Finder" when you see the word next to the Apple icon in top left corner of your monitor/screen.) All this can become confusing due to some "directions" telling the user to "click and hold." The "click and hold" means to move the mouse arrow over the object, click down on the mouse but do not finish "clicking" by letting go for the up motion of a full click, it is essentially a "half-click." This action usually causes the mouse arrow to "grab" or "hold" the object or icon.
Double-click
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The left mouse button is the one which is mostly used by the computer user. It is used for clicking and double clicking objects. Clicking is used to select objects, whereas double clicking is used for opening objects on the computer. Another important thing that the left mouse button can be used for is dragging things on the computer. On the other hand, the right mouse button allows the computer user to select from a list of commands that can be used to instruct the computer to perform a certain action. It can be used to change the background of the computer, create folders, rename files and folders.
It depends a bit on the program. Usually there is a scrollbar, which you can control with your mouse. Certain keyboard shortcuts may also be used, for example arrow up and arrow down, as well as page up and page down.