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<source lang=apl inline>∊</source> is the Greek letter [[Epsilon]] which corresponds to the letter **E** for [[Enlist]] and [[Element of]]. | <source lang=apl inline>∊</source> is the Greek letter [[Epsilon]] which corresponds to the letter **E** for [[Enlist]] and [[Element of]]. | ||
<source lang=apl inline> | <source lang=apl inline>⍴</source> is the Greek letter [[Rho]] which corresponds to the letter **R** for [[Reshape]]. | ||
<source lang=apl inline> | <source lang=apl inline>~</source> is [[Not]] when monadic, but its dyadic form, [[Without]] can also be remembered as ''but not''. | ||
<source lang=apl inline>⎕</source> is the prefix for all [[system name]]s, and also also manages input from the console as well as output to the console. For that, it is a stylised console. | <source lang=apl inline>⎕</source> is the prefix for all [[system name]]s, and also also manages input from the console as well as output to the console. For that, it is a stylised console. |