General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 3911-1983
Scope
This standard specifies the graphic representation of control characters in GB1988-80 "Seven-bit Coded Character Set for Information Processing and Interchange". These characters are located in columns 0 and 1 of their code table. For space characters (SP) and erasure characters (DEL), which are not normally printed and displayed, this standard also gives their graphical representation. In the code table, the spacer character is at the 2/0 position, and the erasing character is at the 7/15 position.
GB/T 3911-1983 history
1983GB/T 3911-1983 Graphical representations of the control characters of 7-bit coded character set for information processing