SubPlus
SubPlus[expr]
displays as expr+.
Examples
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Wolfram Research (2007), SubPlus, Wolfram Language function, https://reference.wolfram.com/language/ref/SubPlus.html.
Text
Wolfram Research (2007), SubPlus, Wolfram Language function, https://reference.wolfram.com/language/ref/SubPlus.html.
CMS
Wolfram Language. 2007. "SubPlus." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SubPlus.html.
APA
Wolfram Language. (2007). SubPlus. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SubPlus.html