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Changed the about file to add groups. Added documentation on catalogs

\label{Portfolio_About}

The portfolio \index{portfolio} allows you to store and retrieve files. There are two main purpose of using a portfolio; to upload documents that could then be submitted in response to an essay/drop box/task and to upload documents that can be shared.  By storing in the portfolio space of lon-capa you can access these files from any location with an internet/web connection.  

Every student user on the LON-CAPA system has a quota of 20 MB of portfolio space. Each file the student add reduces the quota. However, portfolio submitted files can be modified by the grader and then  uploaded back to the student, this will apear as a new 'version' of the file for the student but does not count against their quota.

There is also a group portfolio with a quota that is set by the group creator (typically a course coordinator). Group portfolios have the same functionalities as student portfolio. The main difference being that a number of people have access to group portfolios. It may be the case that some group members have different access to other group members. Once again, this is controlled by the group creator.    

To use the portfolio to store files you must first create directories (See: Creating Directory \ref{Portfolio_CreateDirectory}) and subdirectories. After creating the directory that you need to enter the directory (See: Changing Directory \ref{Portfolio_ChangeDirectory}) and upload the file (See: Adding Files \ref{Portfolio_AddFiles}) to the current directory.

To use the portfolio to retrieve file, find the directory that contains the file then click on the file name (See: Opening File \ref{Portfolio_OpenFile}). The file that you wanted will be downloaded to your computer.

You can also share your files by changing the file permissions (See: Sharing File \ref{Portfolio_ShareFile}). You can also find/read other people's shared files by typing going to the other person's about me page (http://server/adm/domain/user/aboutme/portfolio).

Also see:
\textbf{Deleting File} (\ref{Portfolio_DeleteFile}), \textbf{Renaming File} (\ref{Portfolio_RenameFile}), \textbf{File Catalogs} (\ref{Portfolio_Catalog}) and \textbf{The file list} (\ref{Portfolio_FileList}).