![]() ![]() This was carried over on PCs by generating a buzz sound. Important messages could be signalled by striking the bell on the teletype. 3 Control-G is an artifact of the days when teletypes were in use. Windows, DOS, and older minicomputers used Control-Z for this purpose. 2 Control-D has been used to signal "end of file" for text typed in at the terminal on Unix / Linux systems. All belong to the common script.ġ Control-C has typically been used as a "break" or "interrupt" key. See also: ASCII § ASCII control characters, and Control PicturesĦ5 characters, including DEL. The semicolon is required.īecause numbers are harder for humans to remember than names, character entity references are most often written by humans, while numeric character references are most often produced by computer programs. ![]() Where name is the case-sensitive name of the entity. The format is the same as for any entity reference: The entity must either be predefined (built into the markup language) or explicitly declared in a Document Type Definition (DTD). In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The hhhh may mix uppercase and lowercase, though uppercase is the usual style. The nnnn or hhhh may be any number of digits and may include leading zeros. The x must be lowercase in XML documents. Where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. A numeric character reference refers to a character by its Universal Character Set/ Unicode code point, and a character entity reference refers to a character by a predefined name.Ī numeric character reference uses the format In this way you can be certain you won't inadvertently delete hidden text.HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. The best way to guard against this is to make sure hidden text is always displayed when you are developing or editing your document. This is especially true if you delete larger blocks of text, such as entire paragraphs. This makes it very easy to delete hidden text without even realizing it. When you turn it off, it doesn't show up at all on your screen. ![]() Turning off the display of hidden text presents a danger that you need to be aware of, however. (This is the tool that contains the paragraph symbol it looks like a backwards P and is technically called a pilcrow.) This tool is directly attached to the Show All Formatting Marks option in the Word Options dialog box it toggles the setting of the check box. You can also control the display of hidden text (along with all other non-printing characters) by clicking on the Home tab of the ribbon, in the Paragraph group. (Same caveat about the Show All Formatting Marks check box applies.) The reason is that if the Show All Formatting Marks check box is selected, then all the check boxes that appear just above it (in the "Always Show These Formatting Marks On the Screen" section) are displayed.Īfter hidden text is hidden, you can later display it by following the same steps, but make sure the Hidden Text check box (step 3) is selected. Note that if the Show All Formatting Marks check box is selected in the Word Options dialog box, it doesn't really matter whether the Hidden Text check box is selected or not (step 3). The display options in the Word Options dialog box. Click Display at the left side of the dialog box.In Word 2010 or a later version, display the File tab of the ribbon and then click Options.) (In Word 2007 click the Office button and then click Word Options. To turn off the display of hidden text on the screen, follow these steps: ![]() When you later display hidden text, it will all be displayed again. When the display of hidden text is turned off, the text is not deleted, its display is simply suppressed-it is not shown. You can control whether hidden text is displayed or printed. In Word, hidden is a text attribute just like italics or bold. Hidden text is text that has the hidden attribute applied. ![]()
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