Introduction - If you have any usage issues, please Google them yourself
On the PL/o of its lexical analysis, grammar analysis and semantic processing procedures for the partial amendment to expand the programs to expand assignment operator:+ = and-= to expand statement REPEAT < statement sequence> DOWHILE < terms of " where" condition " is cyclical conditions, that the conditions established, repeated loop of the " statement sequence" (3) increasing the operation:++ and-. (4) increased type: real number type. (5) expansion of function: to return to the values and return statements.