Mathematica
MATHEMATICA 内置符号

SpanLineThickness

该函数尚未纳入长期 Mathematica 系统，并随时可能更改.

SpanLineThickness
是一个可选项，他指定以打印机的点数计算整行扩张字符的宽度. 例如 \[VerticalLine] 和 \[HorizontalLine].

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