Page "Doric order" Paragraph 8

Because the metopes are somewhat flexible in their proportions, the modular space between columns (“ intercolumniation ”) can be adjusted by the architect.

Often the last two columns were set slightly closer together ( corner contraction ), to give a subtle visual strengthening to the corners.

That is called the “ classic ” solution of the corner conflict ( IV .).

Triglyphs could be arranged in a harmonic manner again, and the corner was terminated with a triglyph.

However, final triglyph and column were often not centered.