optics{ debuglevel }

• usage: \(\mathrm{\textcolor{ForestGreen}{optional\;within\;the\;group}}\)

• type: \(\mathrm{integer}\)

• values: {-1, 0, 1, ..., 4}

• unit: \(\mathrm{-}\)

• default: 0

Parameter controlling diagnostic output in the *.log file. The larger the value is, the more details are included.