Specifications

52
Chapter 4
Basic Program Elements
CONTENTS
4.1 Structure of a Program Line........................................................................... 53
4.1.1 Format of a Program Line .................................................................. 53
[ 1 ] Labels........................................................................................ 53
[ 2 ] Statements ................................................................................ 54
[ 3 ] Comments................................................................................. 54
4.1.2 Program Line Length.......................................................................... 55
4.2 Usable Characters......................................................................................... 56
4.2.1 Usable Characters.............................................................................. 56
4.2.2 Special Symbols and Control Codes.................................................. 57
4.3 Labels............................................................................................................ 59
4.4 Identifiers ....................................................................................................... 60
4.5 Reserved Words............................................................................................ 61