This text is missing some spaces, please add them: Allformsdiffercorrectnessfavorable,unfavorableformsareusuallywrongandaremissingcorners.Figuresfavorableforms-two-,three-dimensional,verticalorhorizontal,aswellasallprojections.
All forms differ correctness favorable, unfavorable forms are usually wrong and are missing corners. Figures favorable forms - two-, three-dimensional, vertical or horizontal, as well as all projections.