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We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

The term you are looking for is digraph, which means two characters that represent one character. Specifically, digraphs and trigraphs are used to represent nonprintable characters. Historically they have also been used for characters that do not appear on a keyboard, although with modern GUIs and keyboards this is less of an issue so this use is more archaic.
– user76225
Commented Jun 6, 2014 at 15:08
"In the good old days" is still today, with ^C and ^D being perfectly functional. The only reason that ^G doesn't make the terminal ding anymore is that most terminal emulators have that response turned off.
– SevenSidedDie
Commented Jun 9, 2014 at 17:45

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Correct minor typos or mistakes
Clarify meaning without changing it
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Always respect the author’s intent
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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

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