There are three ways to download the xmeta package in R:

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1) Go to Packages tab on bottom right quadrant of R. Scroll through the options and select xmeta. 

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2) Type: install.packages("xmeta"). Then, to download the packaged for access, type: library("xmeta"). 

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3) Click on the Tools tab in your Menu bar, which is at the top of your computer screen. Go to the Install Packages option and type in the empty text box or scroll to select xmeta. Once installed, type: library("xmeta").   

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