1

Is there a way to append a tombstone symbol (usually a square) to the right at the end of line of a proof similar to LaTeX proof?

2

My usual solution for this is to specify the margin character at the end of the last line of the proof to be the end-of-proof square in the following way:

.mc \(sq 0  \" Specify the square to be placed directly after the end of the current line.
.mc         \" Restore the setting to the previous.

You might want to place this in a end-of-proof macro, depending on your troff template.

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