Rnst Machas Introductory remarks: Anti-metaphysical

Questions to be answered by reading Ernst Machas Introductory remarks: Anti-metaphysical
(1) What is the meaning of being anti-metaphysical for Mach?
(2) What is the basis for Machas own philosophy?
(3) Can you locate Machas practice of philosophy with regard to idealism and materialism?

Foe each question, write about 500 words, and not only just conclude Machs, but also give some personal points of views.