ebnf-non-terminal-shape

ebnf-non-terminal-shape is a variable defined in `ebnf2ps.el'.
Its value is

round

Documentation:
Specify non-terminal box shape.

Valid values are:

`miter' +-------+
| |
+-------+

`round' -------
( )
-------

`bevel' /-------\
| |
\-------/

Any other value is treated as `miter'.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 20 of Emacs.