What does the italian term allegro mean at the top of the piece

Look at las meninas by diego velasquez. this painting is a masterful example of the use of:

Which is a good guideline to follow when evaluating art

He fields of graphic design and animation changed completely in a very short period of time in the late twentieth century. nearly everything that was once drawn by hand on a drafting table is now done on a computer screen. what are some of the advantages of this transition to digital techniques? are there any disadvantages? what are some of the skills that today’s graphic designers and animation engineers have that earlier ones did not? are there any skills that have been lost in the move to digital techniques?