This template is a wrapper around the HTML <abbr> tag similar to https://en.wikipedia.org/wiki/Template:Abbr and it knows a few common abbreviations to save typing.

Test
{{abbr|WMF|Wikimedia Foundation}}	WMF
[[meta:Wikimedia Foundation|{{abbr|WMF|Wikimedia Foundation}}]]	WMF
{{abbr|WMF}}	WMF
x{{abbr| SMROM }}x	x SMROM x
{{abbr|I2C}}, {{abbr|I²c}}, {{abbr|i<sup>2</sup>C}}	I2C, I²c, i2C
{{abbr|xGMI}}	xGMI
{{abbr|RDIMM}}s	RDIMMs