Syntax: A single line
A verbatim line.
Syntax: A single line with leading spaces
Another verbatim line, with leading spaces.
Syntax: Area (block)
A verbatim area delimited by lines with marks.
Syntax: Area (block) with trailing spaces
Trailing spaces and TABs after the area marks are allowed, but not encouraged nor documented.
Invalid: No space between mark and contents
```Not a verbatim line, need one space after mark.
Invalid: Leading spaces on block marks
``` Not a verbatim area. The marks must be at the line beginning, no leading spaces. ```
Closing: EOF closes the open block
The end of the file (EOF) closes the currently open verbatim area.