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Chapter 4
Basic Program Elements
CONTENTS
4.1 Structure of a Program Line........................................................................... 59
4.1.1 Format of a Program Line .................................................................. 59
[ 1 ] Labels........................................................................................ 59
[ 2 ] Statements ................................................................................ 60
[ 3 ] Comments................................................................................. 60
4.1.2 Program Line Length.......................................................................... 61
4.2 Usable Characters......................................................................................... 62
4.2.1 Usable Characters.............................................................................. 62
4.2.2 Special Symbols and Control Codes.................................................. 63
4.3 Labels ............................................................................................................ 65
4.4 Identifiers ....................................................................................................... 66
4.5 Reserved Words............................................................................................ 67
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