You can see the history of any file or path in a Perforce depot by displaying its submitted changelists by clicking on the Submitted tab.
You can filter your view of the submitted changelists in several ways, using the Changelist Filter:
If you would like to clear your selections, click the Reset button.
NOTE: To save your Submitted Changelist preferences once you have selected all of your options, bookmark this page for future use.
By default, only changelists associated directly with the current file or path are shown. For example, if your current path is //depot/projects/titan/index.html, the submitted changelists page shows the changelists that involve revisions of the //depot/projects/titan/index.html file.
The "Include integrated changes" option expands the changelists shown to include those known to have been integrated to the current file or path. For example, if your current file is //depot/projects/titan/index.html, the "Include integrated changes" option will cause these submitted changelists to be displayed:
NOTE: You cannot see any integrated changelists lower than those shown on the page that includes the first changelist number that directly affected the current file or path. For example, assume the current file is //depot/projects/titan/index.html and it was created with changelist 14560: the last page of submitted changelists you can display, including integrated changelists, is the page on which changelist 14560 is listed. Even though there are other file revisions in considerably earlier changelists which may have been integrated into //depot/projects/titan/index.html, they will not be displayed unless they fit on the same page as changelist 14560.