Method and apparatus for combining undo and redo contexts in a distributed access environment

A means for extending user activity logs in a shared distributed data access environment, comprising:

• first creating means for creating a first user activity log by incorporating a first activity performed on a set of data items into the user activity log;
• and
• sequentially merging means for sequentially merging a second activity performed on the set of data items by a second user into the first user activity log thereby creating a merged user activity log,
• wherein the merged user activity log includes a sequential well ordered set of actions including the first activity and the second activity in order from when the first activity and the second activity are initially merged such that the first user or the subsequent user may undo changes or redo undone changes made by a previous user to the data item.

A system that extends user activity logs in a shared distributed data access environment, comprising:

• an initial compiler, the initial compiler compiling at least one user activity log based on first activities on a set of data items performed by a first user;
• and
• a merger, the merger merging the at least one user activity log with second activities performed by a subsequent user on the set of data items subsequent to the first activities being incorporated into the at least one user activity log thereby creating a merged user activity log,
• wherein the merged user activity log includes a sequential well ordered set of actions including the first activities and the second activities in order from when the first activity and the second activity are initially merged such that the first user or the subsequent user may undo changes or redo undone changes made by a previous user to the data item.