Displaying an indication of changes made to content at a source

1. A computer apparatus comprising:

one or more computer readable storage media;

a processing system operatively coupled to the one or more computer readable storage media; and

program instructions stored on the one or more computer readable storage media that, when executed by the processing system, direct the processing system to at least:

display a document in a user interface to an application;

introduce content into the document from a source external to the document, wherein the content comprises a data entity linked to the source;

after the content has been introduced into the document, receive a notification that the data entity has been changed at the source;

in response to receiving the notification, query the source of the content for changes to the content at the source; and

if a change has occurred at the source, display an indication in the user interface to the application that the change occurred at the source.

2. The computer apparatus of claim 1 wherein the content at the source is introduced into the document from the source external to the document using at least one of a copy-and-paste command or an insert command.

3. The computer apparatus of claim 1 wherein to query the source of the content for any changes to the content at the source comprises the processing system configured to query the source for an update to the content at the source.

4. The computer apparatus of claim 1 wherein to query the source of the content for any changes to the content at the source comprises the processing system configured to query the source for interactive metadata associated with content.

5. The computer apparatus of claim 1 wherein to query the source of the content for any changes to the content at the source comprises the processing system configured to query the source for changes to an original version of the content from an additional source external to the document and the source.

6. The computer apparatus of claim 1 wherein to query the source of the content for any changes to the content at the source comprises the processing system configured to query the source for additional content associated with the content.

7. The computer apparatus of claim 1 wherein, in response to introducing the indication of the change to the content in the document, the processing system is further configured to receive a user command to at least display a preview of the change to the content at the source or change the content in the document corresponding to the change to the content made in the source.

8. The computer apparatus of claim 1 wherein the content at the source comprises at least one of portion of text, a data entity card, an image, a table, a graph, an audio file, or a video clip.

9. A method comprising:

displaying a document in a user interface to an application;

introducing content into the document from a source external to the document, wherein the content comprises a data entity linked to the source;

after the content has been introduced into the document, receiving a notification that the data entity has been changed at the source;

in response to receiving the notification, querying the source of the content for changes to the content at the source; and

if a change has occurred at the source, displaying an indication in the user interface to the application that the change occurred at the source.

10. The method of claim 9 wherein the content at the source is introduced into the document from the source external to the document using at least one of a copy-and-paste command or an insert command.

11. The method of claim 9 wherein querying the source of the content for any changes to the content at the source comprises querying the source for an update to the content at the source.

12. The method of claim 9 wherein querying the source of the content for any changes to the content at the source comprises querying the source for interactive metadata associated with content.

13. The method of claim 9 wherein querying the source of the content for any changes to the content at the source comprises querying the source for changes to an original version of the content from an additional source external to the document and the source.

14. The method of claim 9 wherein querying the source of the content for any changes to the content at the source comprises querying the source for additional content associated with the content.

15. The method of claim 9 wherein, in response to introducing the indication of the change to the content in the document, receiving a user command to at least display a preview of the change to the content at the source or change the content in the document corresponding to the change to the content made in the source.

16. The method of claim 9 wherein the content at the source comprises at least one of portion of text, a data entity card, an image, a table, a graph, an audio file, or a video clip.

17. One or more computer readable storage media having program instructions stored thereon, wherein the program instructions, when executed by a processing system, direct the processing system to at least:

display a document in a user interface to an application;

introduce content into the document from a source external to the document, wherein the content comprises a data entity linked to the source;

after the content has been introduced into the document, receive a notification that the data entity has been changed at the source;

in response to receiving the notification, query the source of the content for changes to the content at the source; and

if a change has occurred at the source, display an indication in the user interface to the application that the change occurred at the source.

18. The one or more computer readable storage media of claim 17 wherein the content at the source is introduced into the document from the source external to the document using at least one of a copy-and-paste command or an insert command.