Keyboard shortcuts or sometimes we called hotkeys can be activated by pressing one or more keys together. Keyboard shortcuts can help you save time by doing some task with quick and shorter way, in shorter words, it was better than using the mouse to access the menus. Generally there is two kind of keyboard shortcuts in the computer world, the common and the specific keyboard shortcuts.
The common shortcuts is a shortcut that most frequently used for the same purpose. For example F1 key for showing the application software help, or CTRL+C keys to copy a selected text. Whereas specific shortcuts is a shortcut that applies only to certain software, or in other words for the same shortcut keys will produce different tasks in different software. For example if we press the F4 key in Microsoft Word will do repeat the last command, while the F4 button on the Adobe Acrobat Reader will show/hide the navigation bar.
Knowledge and use of keyboard shortcuts when working with a software would simplify and expedite the completion of work. But be careful that excess can backfire, when you are too tired after typing a dozens of pages for 48 hours straight and then you fall asleep for a moment on your keyboard and accidentally pressed the keys CTRL+A, then A button for awhile, and last the CTRL+S keys. So that all your work for 48 hours just to live a lot of letters “A” because the software that you use does not have the “Undo After Save” facility nor you do not enable it.
Note:
Generally CTRL+A keys will carry select all text, while CTRL+S will save the document.
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