i am in my dsa preparation journey for the 3rd time and can't decide on my own abilities because i can't go back to what i studied previously. so, this time i will tag everything, comment everything and categorize every problem so that i will know what i know and what i don't know.

as part of it, i made this extension which lets you tag files. hope i will do good improvements to this in future only if those improvements maintain the same simplicity that it is having at present.