TrvActionSave is the action for "File | Save" command.
TrvActionSave = class(TrvAction)
This action saves the document from TCustomRichViewEdit to a file. In addition, this action maintains a list of all documents (TCustomRichViewEdits associated with their file names and formats).
If the document has a temporal name (assigned after executing TrvActionNew action), this action executes TrvActionSaveAs action. So, if you use this action, you must also use TrvActionSaveAs action. The link between the actions may be defined explicitly (via ActionSaveAs property) or implicitly (this action finds and uses TrvActionSaveAs action placed on the same form/datamodule).
If the file cannot be saved, an error message is displayed.
CanCloseDoc method should be used in Form.OnCloseQuery event.