P.s. Also on Android we cannot click on links to open them in their native apps (like Google Drive folders or just a simple link to an image anywhere online) since you will enter edit mode when you click on any field on doit so how do you work this out?

The major "workaround" that I use is that I do not usually even try to keep things linked, and I do not think I would even if the capabilites were more powerful. I believe it boils down to a matter of "philosophy":

I have reference material of many types. I have all kinds of paper based reference material and even physical reference objects. I have digital metrial in all kinds of places - email X, email Y, Dropbox, Box, GDrive, Skydrive and all kinds of other systems that my clients use. It is simply not workable for me to keep everything linked and orderly as ONE system. This is why I do not even try.

Instead I keep order in each system separately. The key is to have some form of classification in each system (shelves, folders, tags, whatever is available), such that I can find what I need without any problem.

Then it follows that once you have a system that you can trust there is actually very little need to link tasks to their respective reference material. It boils down to the question of what is easier and more handy:

1) to make sure I add any required reference info (or links to it) in all tasks, or
2) to retrieve whatever I need, if and when I need it, from my trusted reference system

One further key point is to really process (analyze) all input properly, such that one or more more concrete tasks are created when I deal with each input (email, mail, voicemail, conversation notes ...). I want to avoid having to read my input more than once, so instead of attaching, say, an unread email to a task, I prefer to analyze it completely once and for all and define the specific actions and caveats/checkpoints (subtasks). And separately put the actual document in its permanent reference position where I can always find it.

But I do occasionally link stuff anyway, but only rarely ;-)

@Folke

Thanks a bunch my friend! I truly like your workaround. In fact, I have just implemented it and it seems very promising.

I have created a new folder in my Google Drive account, called "Reference Files" within it two folders called "Active Projects" and "Archived".

Inside the folder "Active Projects" I have several projects each in its separate folder having its name. Inside of the projects folders I put all the files related to it, and I added a folder called "Processed" inside each project folder.

When I have a task that requires some files, I would go to the project under which the task fall and find the file(s) in question. Once I finish the task, I would move the processed files inside the "Processed" folder to keep them archived if I ever needed them again, and at the same time to avoid looking at them in the future, and just focus on the remaining files.

Later, when all tasks and files relating to a project are processed, I would move the entire project folder to the "Archived" root folder.

I would still love to hear other opinions, and hope that Folke's and my input were helpful to you.

Best regards,
Wassim

@Wassim @Folke Thanks for your advice. We will take your ideas into account.