If I type nant -help I receive help information about the various command-line options.
Some, such as find have a suffix of [+|-], e.g.
-find[+|-] Search parent directories for build file
What does the [+|-] mean?
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In command line options syntax, sometimes
[...]is used to denote optional items, and|is used to denote alternate. So it looks like there are 3 different variations here:The documentation should clarify what each of these variation means.
See also