When using them, stick to the format above; that is, keep the "if" and the "then" on separate lines, and keep the "else" and the terminating and required "fi" in horizontal alignment with them.

Various XML standards have been created for both the horizontal and vertical market sectors and there are ongoing efforts to move towards a standardized format in the various industry sectors.

For instance, you may like this portrait of Pat in a square format, or cropped to a horizontal.