If I have a table w/ a header:
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| IPv4 addresses wanted | IPv4 addresses used | IPv4 addresses wasted |
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| 100 | 80 | 20 |
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& if I want to reduce the "repetitiveness" of the headers, which symbol(s) should I use as a placeholder for "IPv4 addresses" sub-string? I vaguely remember that in school I've used "-/-" string in similar cases, but I'm not really sure that it's not a false memory.
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| IPv4 addresses wanted | -/- used | -/- wasted |
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| 100 | 80 | 20 |
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