是有可能的打印索引卡。

It is possible to print Index CARDS.

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这些资源要比任何形式的打印出来的目录和索引要好的多。

These resources are far better for that purpose than any printed book's table of contents or index.

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第20行访问栈顶(栈顶的索引为- 1)作为lua字符串，打印消息，然后从堆栈中删除该值。

Line 20 accesses the top of the stack (the top of the stack has an index of -1) as a Lua string, prints the message, and then removes the value from the stack.

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