CANOPEN

Syntax: | `scalar = CANOPEN(filename)`

The `CANOPEN` function accepts a string as argument, which is interpreted as a file name. If `filename` exists, the function returns the value one (1). If `filename` does not exist, the function returns the value zero (0). The `filename` string argument will not be modified.

Examples

`TEST = CANOPEN('/home/user/foo.dat')`

or

`FILENAME = '/home/user/foo.dat'`
`TEST = CANOPEN(FILENAME)`