1. A method for generating a preview of a content package file, the method comprising: retrieving references to first level content files from the content package file, wherein the first level content files are separate files from the content package file; extracting content from the first level content files; replacing references to the first level content files in the content package file with the content extracted from the first level content files to create a combined file; removing the references from the combined file; and creating a preview of at least a portion of the content package file based on the content in the combined file, wherein information rendered by the preview displays at least some of the content extracted from the first level content files and content from the content package file, wherein the preview displays a version of the content package modified with the content from the combined file, wherein the preview occurs prior to generating a modified content package file from the combined file.
1. A method for generating a preview of a content package file, the method comprising: retrieving references to first level content files from the content package file, wherein the first level content files are separate files from the content package file; extracting content from the first level content files; replacing references to the first level content files in the content package file with the content extracted from the first level content files to create a combined file; removing the references from the combined file; and creating a preview of at least a portion of the content package file based on the content in the combined file, wherein information rendered by the preview displays at least some of the content extracted from the first level content files and content from the content package file, wherein the preview displays a version of the content package modified with the content from the combined file, wherein the preview occurs prior to generating a modified content package file from the combined file. 3. The method according to claim 1 further comprising: determining whether the first level content files contain references to second level content files.