Beamer.sublime-completions

{
        "scope": "text.tex.latex",

        "completions":
        [
                // Beamer
                { "trigger": "uncover", "contents": "\\uncover<${1:+-}>{$2}"},
                { "trigger": "visible", "contents": "\\visible<${1:+-}>{$2}"},
                { "trigger": "only",    "contents": "\\only<${1:+-}>{$2}"}
        ]
}