A macro is a single instruction or hot key that replaces a sequence of instructions to perform a particular task . Ex: A macro for a routine print in a spreadsheet program.
Systems Design : This is a stage of the system life sycle in which the new system is designed to meet objectives set out earlier. File structures,validation rules, input specifications/screen, output screens/specifications,hardware and software to use,test strategy, system flowcharts,data flow diagrams ,algorithms,etc. are all decided upon or designed for the NEW system.
(Not exactly a proper definition though)
Fax: This is short for fascimile message. This is basically the message content sent from one place to another electronically using telephone lines. It can be obtained as a hard copy on paper.
Hope this help igcseboy...