It can be used for all phases of drywall finishing, embedding joint tape, filler ... Taping compound is also the best option to cover plaster cracks and when superior bonding and crack resistance ...
As long as you have the right tools and a solid supply of patience, you will be able to make those pesky drywall ... it out as best you can and then adding a layer of mesh tape over the crack ...
Here is how professional decorators fix cracks ... the tape so that it is just larger than the crack itself before sticking it over and allowing it to dry and adhere fully before moving on to the next ...