Marks the level (平) or oblique (仄) tone of every character against a built-in dictionary so you can check a classical poem against the expected tonal pattern.
逐字判定平仄：把每句按字拆开，命中内置平声字库（198 字）标「平」、命中仄声字库（2086 字）标「仄」、两库均未收录标「？」，再按句分行输出逐字平仄串，便于对照格律谱自查。多音字与古入声字仅作参考，最终以权威韵书为准。
逐字标注格律诗的平仄：把输入诗句按字拆开，与内置的常用平声 / 仄声字库比对，命中标「平」或「仄」、未收录标「？」，再按句分行输出平仄串，便于对照格律谱自查。