UOS (Universal Open Stack) directory unit measures 2Dir (pronounced tu-dir) like a tutor for 1Dir (pronounced won-der)
While languages have words that have definitions and uses that can mean several things, numbers have definition that are a value to languages of words beyond any dead language that may or may not have lost its value and the numbers definitions are universal beyond a language's limits in time and space. The library on 2dir has the base numbers of a universal open stack comprised with numerals from variables of sequential sets overlaying one another in altering arithmetic for quotients, that are applicable to products, sums, differences and further quotients. These values have equaling exact variables of detailed definitions and constants, holding loop decimals, and non-loop holding decimals. The library consists of a basic description and the variables extend far past the listed universal open stack of number data .