typo: approriate -> appropriate
typo: optimisation -> optimization
typo: persistance -> persistence
typo: tranfer -> transfer
typo: sicne -> since
typo: unfortunally -> unfortunately
typo: enoungh -> enough
typo: Exceptiopn -> Exception
typo: temorary -> temporary
typo: decription -> description
typo: previos -> previous
typo: tempoary -> temporary
typo: equantion -> equation
typo: unpleasent -> unpleasant
typo: formatet -> formated
typo: constitues -> constitutes
typo: mayby -> maybe
typo: horizontial -> horizontal
typo: horizontical -> horizontal
typo: visualy -> visually