Simultaneously displaying multiple related documents in a logically hierarchical manner

A non-transitory machine-readable medium that provides instructions which, when executed by a machine, cause said machine to perform operations including:

• displaying a first document on a display screen;
• receiving a command to insert an enhancement point at an anchor point in the first document;
• displaying the enhancement point at the anchor point in the first document;
• receiving a command to create a first enhancement implementation at the enhancement point, the command to create the first enhancement implementation defining a second document to be inserted in its entirety into the first enhancement implementation and establishing a first hierarchical relationship between the first document and the second document;
• displaying the first enhancement implementation of the first document entirely within the first document at a location based on the location of the anchor point in the first document, while continuing to display the first document;
• receiving a command to create a second enhancement implementation at the anchor point, the command to create the second enhancement implementation defining a third document to be inserted in its entirety into the second enhancement implementation and establishing a second hierarchical relationship between the first document and the third document;
• displaying the second enhancement implementation of the first document, while continuing to display the first document and the first enhancement implementation, wherein the second document or the third document is displayed at the anchor point depending on whether the second document or the third document, respectively, is selected to be active;
• performing a first action on the first document that is independent of the second document;
• and
• performing a second action on the second document that is independent of the first document, wherein each of the first action and the second action comprises at least one of a save operation, an activate operation and return to prior version operation, wherein each of the first document, the second document and the third document has a separate state, the separate state comprising at least one of active, inactive, saved and unsaved.

An apparatus comprising:

• one or more processors;
• memory;
• and
• one or more programs stored in the memory, the one or more programs comprising instructions for:
• receiving a first document, a second document and a third document from at least one machine-readable media, the second document being associated with a specific subsection of the first document and is at least one of a replacement of a contiguous part of the first document or an addition to the first document at the specific subsection in the first document, the third document being associated with a specific subsection of the second document and is at least one of a replacement of a contiguous part of the second document or an addition to the second document the specific subsection in the second document;
• and
• simultaneously and distinctly displaying, on a display, the first document, the second document and the third document in a nested enhancement hierarchy by displaying the entirety of the second document in the first document at a location based on the specific subsection of the first document with which it is associated and an entirety of the third document is included in the second document at a location based on the specific subsection of the second document with which it is associated;
• and indicating at least one of the a location in the first document at which the second document is included, and the location in the second document at which the third document is included.