**shell
#
Description#
This command allows to declare external (system) commands to be executed. For instance, it is useful to copy, rename or remove files while transforming a mesh.
A similar command ****mesher ***shell
can also be used when the commands are to be launched before or after mesh transformations.
Syntax#
**shell
shell-command1
Example#
****mesher
***mesh new.geof
**open original.geof
% mesh transformation
...
**shell rm -f original.geof
...
****return