Editing files in an IBM Notes application is laborious:
Normally you have to open an Notes document for editing, then you have to open the file for editing. After editing the file you have to save and close the file and then you have to save and close the Notes document. This is really not practical...
There should be a better support for doing this. It should work like in a file explorer: double click for opening/editing a file and saving the file (e.g. in MS Office) should be enough.
There should also be a support for editing files in XPages. It is not practical to download a file, edit the file locally and upload the changed file.