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Glyph testing in User interface category icons

lab, science, test, testing
adjustings, developer, programing, settings, sound, testing
equation, formula, science, testing
function, mode, round, test, testing, tube, vase
chemistry, experiment, instrument, science, test, testing, tube
retort, beaker, chemical, science, testing, labs, experiment, formula, test, laboratory, chemistry, experimental
change, exchange, progress, reorder, syncronize, process, refresh, ongoing, review, testing, simultaneously, rotation, cycle, treatment, rollover, substitution, routine