IBM System/3 BASIC was an interpreter for the BASIC programming language for the IBM System/34 midrange computer.[1]
System/34 BASIC was first offered in 1978, and as such, contained many of the trappings that a BASIC program would have encountered in the time period of the TRS-80, or many other offerings of the 1970s and early 1980s.[2] As such, S/34 BASIC uses conventions that are no longer standard in modern BASICs, such as line numbers, and does not support newer features such as WHILE/WEND, DO/ENDDO, WITH/END WITH, procedures, properties, and so forth.