Add a product behavior section in docs

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# Known issues
# Known issues and limitations
Below is a list of known Corso issues and limitations:
## Issues
* Corso supports Exchange (email, calendars, contacts), OneDrive (files) and SharePoint (Document Libraries) M365 data.
The following are the issues that we're currently aware of within the project.
## General
- Corso supports Exchange (email, calendars, contacts), OneDrive (files) and SharePoint (Document Libraries) M365 data.
Additional data types and services will be added in subsequent releases.
* Backups of Exchange email may not include changes to the read status of an email if no other changes
to the email have been made since the previous backup.
* Restoration of Nested attachments within Exchange Mail or Calendars aren't yet supported.
* Folders and Calendars containing zero items or subfolders aren't included in the backup.
* Provides no guarantees the inclusion of data that's moved, added, or deleted
- Provides no guarantees the inclusion of data that's moved, added, or deleted
from M365 while a backup creation is running.
The next backup creation will correct any missing data.
* Sharing information of items in OneDrive/SharePoint using sharing links aren't backed up and restored.
### Drive items (OneDrive/SharePoint)
* Permissions/Access given to a site group can't be restored.
- Permissions/Access given to a site group can't be restored.
* If a link share is created for an item with inheritance disabled
- If a link share is created for an item with inheritance disabled
(via the Graph API), the link shares restored in that item will
not be inheritable by children.
* Link shares with password protection can't be restored.
### Exchange
* Teams conversation replies are only backed up if the parent message is available at the time of backup.
- Backups of Exchange email may not include changes to the read status of an email if no other changes
to the email have been made since the previous backup.
* Groups SharePoint files don't support Export. This limitation will be addressed in a follow-up release
- Restoration of Nested attachments within Exchange Mail or Calendars aren't yet supported.
* Teams messages don't support Restore due to limited Graph API support for message creation.
- Calendars containing zero items or subfolders aren't included in the backup.
* Groups and Teams support is available in an early-access status, and may be subject to breaking changes.
- Backing up a group mailbox item may fail if it has a large number of attachments (500+).
* Restoring the data into a different Group from the one it was backed up from isn't currently supported.
### Teams
* Backing up a group mailbox item may fail if it has a large number of attachments (500+).
- Teams conversation replies are only backed up if the parent message is available at the time of backup.
- Groups and Teams support is available in an early-access status, and may be subject to breaking changes.
- Restoring the data into a different Group from the one it was backed up from isn't currently supported.
## Limitations
Following are unexpected behaviors or inherent limitations of the project.
### Drive items (OneDrive/SharePoint)
- Link shares with password protection can't be restored.
- Restored link shares always generate different links from the original.
- Anonymous link shares (link shares which aren't associated with any user) aren't restored.
### Exchange
- Exports of multipart emails containing both HTML and text versions will only produce the HTML version of the email.
### Teams
- Teams messages don't support restore due to limited Graph API support for message creation.