Checks if the specified directory exists
| Number | Type | Compulsory | Default | Description |
| 1 | string | Yes | Directory name |
Return type: real
Function returns a real scalar with one of three values:
| Index | Description |
| 0 | Directory does not exist |
| 1 | Directory exists with write privilege |
| 2 | Directory exists but with no write privilege |
| ▲Function Summary▲ | ||
| ◄ ExistCommand | ExistFile ▶ | |