When you start Eiciel no file is opened. You can open a file pressing Open. A file selection dialog will appear where you can choose a file or a directory.

Figure 3. Opening a file

In Nautilus right-clic on the file or directory. Then press Properties and activate the Access Control List tab.

Figure 4. Opening a file in Nautilus

All entries in the Access Control List have the three permissions of reading, writing and executing. You can grant or deny the permission simply checking or unchecking the proper checkbox.

Figure 5. ACL entry

Eiciel uses icons to show the entry type. The following tables list the icons used.

Table 1. Icons used in Eiciel

	Owner user. Is the UGO User. There is always this entry and cannot be removed.
	Owner group. Is the UGO Group. There is always this entry and cannot be removed.
	Other. Is the UGO Other. There is always this entry and cannot be removed.
	User. A file can have zero or more entries of this kind.
	Group. A file can have zero or more entries of this kind.
	Mask. Contains the maximum permissions that an ACL entry will effectively have. This entry only is available if there are any User or Group entries.

	Default owner user. Is the User UGO by default in the new files of the directory. There is always this entry and cannot be removed. This entry only can be found in a directory.
	Default owner group. Is the Group UGO by default in the new files of the directory. There is always this entry and cannot be removed. This entry only can be found in a directory.
	Default Other Is the Other UGO by default in the new files of the directory. There is always this entry and cannot be removed. This entry only can be found in a directory.
	Default User. A directory can have zero or more entries of this kind. New files in the directory will have this entry by default. This entry only can be found in a directory.
	Default group. A directory can have zero ore more entries of this kind. New files in the directory will have this entry by default. This entry only can be found in a directory.
	Default Mask. Contains the maximum permissions that a default ACL entry will effectively have. This entry only is available if there are any Default User or Default Group entries.

Users or groups of your system can be added as ACL entries. Choose the kind of entry selecting User or Groups. Depending on this the bottom list will show the users or groups of your system.

You can add the user or group by selecting on the list and pressing Add. You can also drag on the top list or double-click it to achieve the same effect or press Add in the popup menu that will appear right-clicking on the entry. It will appear as a new entry in the top list.

To remove an ACL entry select it from the top list and press Remove. Alternatively you can double-click it. You can also press Remove in the popup menu that will appear right-clicking on the entry.

Opening a directory instead of a file enables Default ACL and Default buttons.

Default ACL can be used to add or remove default ACL entries. When there are no ACL default entries this button remains deactivated. Activating it adds basic default ACL entries. It will be always activated if there is any default ACL entry. Deactivating it implies removing all default ACL entries.

Default checkbox can be used to add default ACL entries.

ACL entries imply an additional entry called mask. The mask defines effective permissions that can have user entries (except for the owner), group owner and group entries.

If the mask disallows a permission to be effective Eiciel puts an exclamation mark next to the uneffective permission.

Figure 6. Permission mask example