There is highlighting in the sense of selecting text, which enables you to do things with the selected text. There is also the highlighter facility, which enables you to highlight text in a colour, like you would use an actual highlighter pen on a paper page. You can drag across the text to do it one the option is on.
It is important to read and understand the text before highlighting it. This will help you identify key points, main ideas, and important information to focus on while highlighting. It is also helpful to have a purpose or goal for highlighting the text in mind before you start.
Yes
Highlighting nearly the entire page
Highlighting. :3 Sometimes, it's also called selecting.
The two are similar, with subtle differences. When you select text you usually make a choice between pre-defined options, such as a list. When you highlight text, you use your mouse to drag and mark the text; highlighting may or may not do anything other that to identify the text you marked.
You can delete text in an Excel cell by pressing Backspace or highlighting the text and pressing Delete.
shading can be used as style while highlighting can not be used as a style. By using highlighting option, u can highlight selected portion of text with the desired color, where as by using shading u can highlight, texture a block of text.
mark up the entire page
There are no options provided in order to pick the one you should not do when highlighting a text. Just place the cursor on one end of the text and drag the mouse over it and choose your highlight colour.
See "What is the purpose of text?" for answer.
no!
In order to do various kinds of formatting or other operations on some text, it is usual to first select the text.