add groff

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Malin Freeborn 2021-04-20 21:22:17 +02:00
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# Basic Documents
Great a file called `name.ms`, with the following content:
```
.TL
Groff-Time
.AU
Ghost
.NH
How to Format Groff Documents.
.PP
Groff needs two new lines to show a new paragraph.
```
Then make a pdf from the document with:
`groff -ems name.ms -Tpdf > name.pdf`
The commands must be placed at the start of a line.
The available commands are:
| Result | Command |
|:----------------:|:-------------------|
| Section Header | .NH 1 |
| Subsection | .NH 2 |
| Subsubsection | .NH 3 |
| Paragraph | .PP |
| Bold text | .B "text" |
| Italic text | .I "text" |
| Bold Italic text | .BI "text" |
| Author | .AU |
| Title | .TL |
| Start abstract | .AB |
| Start an equation| .EQ |
| End an equation | .EN |
## Equations
To format `2+2=5`, we can do:
```
.EQ
2+2=5
.EN
```
The equation shorthands are predictable:
| Symbol | Macro |
|:----------:|:--------|
| Greater than or equal to | >= |
| Not equal | != |
| Superscript | sup {thing} |
- [List of symbols](https://www.math-linux.com/man/man7/groff_char.7.html)
### Examples
The fraction 2/5ths:
```
.EQ
\[25]
.EN
```
E=MC^2:
```
.EQ
E = MC sup 2
.EN
```
Praedicate logic:
```
.EQ
\[fa] x Rx \[te] y Syx
.EN
```